all integra's share the same body from Generation to Generation...as for the LS/Vtec...sure it will make more power, but the LS rods can't handle much more than 7,000 rpm....I would get new rods, oversized forged pistons, ARP bolts, new bearings, along with a portflow b16a head...if your going to do LS/Vtec, do it right the first time....you don't do it right the first time, it will fuck up....if the shop does a good job on everything, it will run flawlessly....if they didn't make more power, why would people do it...the b18b has more displacement than the b18c...I personally would never do this...If I was going to franky an engine, it would be CRVTEC, b20b block with a Vtec head
if you want power b18b and a turbo is good for smiles all day
b18b1 has 142hp stock
b18c1 has 170hp stock
torque numbers are the same
it's up to you, I personally would get the b18b and turbocharge it