Making one car of two damaged ones is called a "splitter" or a 'clipped car' and is accepted practice as long as the mod is done by competent people. I've driven several that handled well. In racing its not only accepted, its common. Adding a front or rear clip is OK in my book as long as the fact is known to a purchaser.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.