truck already has a 440 in it,just wanting too try building a 451,i think it would/should be more FUN,the 440 is healthy,but i think the 451 should b more healthy.money is a restraint,so taking baby steps,little at a time,just upgrading a little.i have been accumulating parts for this build for a couple years,got the pistons rods and crank and block and heads,hopefully i'll find some more parts at the indy swap meet in march,oh yeah!