I'm installing a 383 440HP in a 79 Corvette with a turbo 350 for a friend is there an easy way to figure out which mechanical fuel pump I should use Summit offers 2 different Holley's but I don't know which to choose.Engine has no name dual plane aluminum intake,Holley carb,aluminum heads,roller rockers,high performance HEI distributor It was advertised at 440HP and dynoed at 413HP in hot air temps.Hope this helps!!!