[whtteg]

Well if you are going to bore out the block then I would just get a whole B18C1 swap and bore that out. It will be just as fast as the LS/VTEC, by the time you get done the two motors will be almost thye same except the LS/VTEC motor will have slightly more displacement and the B18C1 motor will have oil squirters. Also you cam swap in a B18B1 crankshaft and rods and make the B18C1 have the same displacement as the LS/VTEC. The reason for the shprter stroke on the B18C1 is so that the R/S ratio is higher so you can visit higher rpm with less chance of damage.