well, if your block is good, might as well use it. all the blocks are the same, right? only difference being head and pistons in the block. but since you're getting new pistons, that shouldn't even matter. and if i remember correctly, only difference between heads is the cam. so if you're getting a delta cam, then the head is a moot point as well. just get yours rebuilt. with prelude a18a setup for higher revving. that should save you a buttload of money right there.
and i won't be surprised to see $5+/gal for gas come summer if we have any hint of a hurricane. and if it actually hits, i don't think we'll ever see gas below $3 again. that's really rediculous. that's a 500% (340% right now...) increase in price in the last 8 years. and all this bullshit the oil companies is giving us really needs to be investigated. sure the price of oil has gone up, but i've noticed over the last couple months that the price of oil and gas never matches up very well twice. and also, exxon mobil had the highest ever net profit in company and us history for any single company.