I like the way you think. They are 100% correct. Most mechanicals can be scavenged off of the flood of Zus thanks to Cash for Clunkers. There are few that can't be obtained, but with some creativity, and a grinder, most parts can be modified to fit.
Plastic is our biggest downfall.
I am like Billy (triathelete) I beat the piss out of mine, take VERY good care of it as far as maintenance and I will worry about broken stuff when the time comes. It is by far the coolest car to drive ever. It turns heads everywhere, it could be at an exotic car show, and hold its own.
GO FOR IT!!!! (only if you are going to use it, none of this garaged for three years hoo ha)