Just behind and inboard of that chicken wire bodge on the MK2 in the AA book is the front anchor point for the car's rear spring, and there's
a lot of energy in a semi-elliptic that's used as a quarter elliptic with two effective fulcrum points so as far as "chassis" bodgery goes, the sills on that are probably more significant than - say - the outriggers on a Herald or Scimitar chassis or the flexing bulkhead of an ADO16 that's started to
soften a bit.
It wouldn't have been so bad if the AA had, for example, chosen a sill on an A60 or MK3 Cortina as those at least had box sections running along the floor and wouldn't collapse in a pile as a result of a little Cataloy in one outer sill.
Aye, it was a funny old world back then.
