[PeteLeathersac]

Good points and ideas, but first I think a few definitions of the types of "repair"....rebodied, clipped, firewalled....whatever is in order before condeming one or the other. . Personally I think the above scenario using a rear clip from a donor car as a different thing than a "firewall car". . It seems like a firewall car may sometimes be a car who's firewall has been spliced and sectioned out to retain the hidden Vin also not disturb the Vin tag area itself?
Lets just get deep into it and present another scenario. . It's your lucky day. . You find a ZL1 Camaro deal. . Sadly it's become part of the ground sitting in a backyard since 1970 but it's genuine, the motor, trans, rear and tags are all there and are all THE originals. . The original owner has passed away and his wife is an old lady in an old folks home. . With the deal is a another '69 in the garage, the wife's car, it's a clean 307 car, even a stick! . Lucky again as she'd left the files w/ original bill of sales, window stickers and POPs for both cars on the visor of the car in the garage! . Oh, the old folks home just called too and the old lady has passed away, now at peace with the news her cars have found a good home. . It's all in your shop now....lets look over what we've got and see how we're gonna' fix this one Goob? ~ Pete