STL engine builds?

[Ron Earp]

I
OK, the $$ aspect is nuts, but assuming wrecks become available in a year or so (or less, LOL), what could that engine make? Are my calcs right that it would currently weigh 2665?
I KNOW theres some "gotcha" that will make this car unacceptable, LOL. What am I missing/

Seems heavy compared to the uber-Hondas.

Why does the RX7 weigh the same as it does in ITS trim, 2680 lbs? That seems mighty heavy for a 180 rwhp car with a horsepower curve resembling more of a spike than a curve.