Connect the rear
body supports.
Formed damper and upper-strap body panels replace isolated pads and pins. Separate damper mounting ears, fixing envelopes, upper strap retainers and two rubber-bumper beams now expose the previously missing body relationships.
What the evidence establishes
Factory p. 151 separates two damper/body bolts per side, washers and nuts. Manufacturer F25 lists AHA7879/80 damper mount panels for 1964–79 semi-elliptic cars, separately from earlier quarter-elliptic AHA7306/07. The supplier’s own AHA7880 photo supports a formed web, returns, paired damper holes and a low attachment. Applying that low attachment to the retained upper-strap station remains an estimated relationship.
Factory p. 233 lists handed CZJ644/645 bumper mounting beams for GAN6-154101 onward and luggage floor CZJ569. The manufacturer’s rear-body diagram distinguishes rubber-bumper underframe CZJ602 and current replacement floor CZJ568. These references establish roles and application comparisons; they do not identify the fitted panels or equate the two floor part numbers.
Existing owner side/cabin views IMG_6329 and IMG_6341 establish general body context. IMG_6919 is front underside context. None calibrates these hidden rear supports. No direct owner dimensions are applied to the new geometry, and no repeat capture is requested.
Retained stations, new construction
| Assembly | Relationship and limits |
|---|---|
| Formed support panels | Fixed webs at X magnitude .41 body units follow the retained floor underside/step. Profiles, 3 mm webs and 1.5 mm returns are construction estimates; no surveyed seams or continuous structural load path. |
| Damper mounting | Two shared X-axis bores per side at Y=.455 and Z=-1.66/-1.46 join estimated ears to the support web. Existing damper body, arm and link geometry/positions remain unchanged. Four smooth bolt/washer/nut envelopes are not a fitted casting, bolt map, thread or torque specification. |
| Upper rebound-strap pin | Center X magnitude .36/Y=.49/Z=-1.20 and the old pin radius remain drawing datums. The outer pin terminal extends through the panel and gains smooth washer/nut envelopes. Actual pin size, locking, strap slack and suspension travel remain unknown. |
| Bumper floor beams | Generic open channels lie above the low boot floor from Z=-2.02 to -1.58, centered at X magnitude .43. Rear endplate bores share the four existing bumper-stud axes. Channel section, endplate shape, joins, retention and fitted bumper/body alignment remain estimates. |
The old low bumper studs sit at the estimated floor level. Two rear-open T reliefs in the floor and beam bases, with narrow matching reliefs in the local shackle doublers, accommodate that retained drawing conflict. Narrow portions are 16 mm wide and 40 mm deep; short wide portions cross the estimated endplates. These dimensions describe the model only. They are not observed factory openings, fitted clearance allowances or a repair/cutting template.
Inspect the relationships
Use selection and isolation to inspect support, ear, fixing and strap-pin boundaries. Panels and beams remain fixed during separation; ears share the damper’s illustrative display translation. Separate hardware translations show part ownership only. No safe release sequence, support point, tool access or verified withdrawal path has been established.
Body strength, weld/lap sequence, impact/jacking/towing loads, loaded suspension geometry and corrosion/repair history remain unresolved. The bump-stop attachment and strike surface are not located. The next substantial rear task is to reconcile those relationships and remaining frame continuity from existing evidence rather than placing them by guesswork.
Native exports and validation
Build the rear-frame reference before rear-body-mount if rebuilding both: the latter reads the declared reliefs. The viewer floor reads the same metadata. Validation checks solid validity, STEP round-trip, shared damper/strap/bumper bores, matching reliefs, retained adjacent geometry and metric placement. Those checks establish internal construction consistency, not fitted dimensions or service readiness.