Ya might consider even a 4dr, there cheaper. Maby even a 6 or 8cyl Ford Falcon, ,maby '61- '63 Falcon Sprint. Why do you need 900 RWHP?, that's not practicle because, it's not streetable, you loose true streetability at around 500 RWHP. You'd have more in the engine than you want in the entire car, and all the expensive suspension/ high hp trans/ wide slicks and a tubs to accomodate them, your probably looking at 10-20K to get the engine to 900 horse, another couple thousand for a trans that can take 900 horse, maby 5-10k for suspension/ traction control parts and, a rear end that can take 900 horse. Get a 400 horse buildup, that's adaquate.