hello all; the 534 truck block is close to the 430 block. i don't know if you could bore a 430 to 4.50 without looseing a cylinder. i beleive the truck block is quite a bit heaver. you could probably cut down a 534 steel crank to fit in a 430. you might be able to put 430 heads on a 534 short block and build a sheetmetal intake. i don't have the resorces or the funds to check this out but it would be fun. did you know that the 1959 nationals was won by a 430 powered dragster by rod singer. on the lincoln y-block, i belive you could use pontiac pro stock sleeves and an olds aftermarket forged crank to make a large cu.in motor. with small adaptor plates you could use any intake from a low deck chrysler. unlike y-block fords whitch won't take much of a cam because of small journel size, the lincoln would be easy to cam and it uses the same lifteres as a FE. with a little machineing i belive you could make cross bolted main for it. i have a couple of the lincoln y's but low funds have kept me from doing much yet, mabey next year. i feel your wasting your time talking to ford, like everyone else working on new items for the old engines, they would cost more than most people could afford. why do you think more people use sh_tbox engines than anything else, because any bummy can put one together and it'll run and with 90 billion bummys building them there's plenty of parts durt cheap. with enought money you can build a ford to win but most people don't have that kind of money. sorry i got off on a rant, have a nice day,wayne.