My question is I want to do a 1990 mustang convertable but I'd like to put a 429 automatic in it I've found a 429 short block with factory 4 bolt mains forged steel crank heavy duty factory rods and the factory forged aluminum pistons I'd like to build it for aprox. 500 hp for a street only engine plan on using E85 for fuel I have beentold it is over 110 octane and is good for perfomance use so how feasable is it for a 500hp automatic street engine and what would you use for heads cam intake / maybe supercharge and use a more mild cam for a nice idle main idea is a very smooth driveable 500hp. something driveable in city traffic...