Here is what I think about those Volare Roadrunners... Freaking quite sweet.. I had one, 77. Ground effects were gone, louvers and tail spoiler still there. Painted it and it was really quite nice. Interior was excellent condition and totally 70s stylin'. Too bad I don't have it now.. I would try a BB fitment. FirmFeel is making some goodies for them, and gearing up to make more goodies for them, from my understanding..
I would say they wont make the best of a pro-touring or road race car (my thoughts are they are nose heavy), but for drag or hi-po street mo-shine.. Now, if you could only get the price down some.. I suppose the price depends on how "un-molested" the entire car is, and how close it is to where you would ultimately want it. Heck, if it is mint original with no rust, I think its totally worth the money actually.. It is a real treat to start with a car that is not rusted nor hacked.