10 years?! That's ****ing dedication right there.
Cool. But with the money he has in that why not just buy the real thing.
It's nothing special, people build these replicas using a custom tube chassis all the time, (a lot of them use a fiero chassis). He just fabricated his own kit, which a lot of people decide to do as well.
kitcars.com
kitcar.com
These are all replicas
Some of them will actually blow the doors off the real thing. There is a company that uses a real nice tubular chassis, multi-link suspension, modded LS7 z06 motors or V10 BMW motors, Porsche transaxles, etc..They still end up costing you over $100K+, but they're light, (under 3,000lbs) and in some cases over 600hp.
Not even comparable. A lot of those are probably manufactured kits, his is built from the ground up. Forming the panels to the chassis. If it's not a problem, how many people have you known that was able to build a car from nothing.
Regardless of how many times someone has done it, it's still an achievement to build something like this in your basement.