I am still trying to piece together in my head what im going to do with my 351 when i start building it, hopefull before the summer. This is my first motor ever so im trying to keep it around $3000 total give or take. I have a complete running 1990 351w motor. (1990 meaning non-roller cam) My first question is should i get the crossover lifters and convert to a roller cam or stay flat tappet? second question is should i try to used the stock 351 heads and have them done up at the machinse shop or would it be more cost effective to getsome aftermarket heads? I want to run 11:1 compression and i dont know if its worth it to used the 351 irons. i know the exhaust ports have to be hogged out but some nice aluminum heads would be nice. i am going to used the stock crank, but should i get some forged rods or will the stock ones hold up? def getting forged pistions. Thanks guys, one of these days ill stop being afraid and stop asking questions and actually start building something. thanks