Getting ready to do a LS/vtec swap, I’m trying to get forged pistons but don’t know what size to get, I have a b20b block getting ready to put a b16a2 head on. Also, should I get my head & bottom end resurfaced prior to the swap? Or should I just do a regular engine rebuild? I already looked at the integra discussions on ls/vtec & couldn’t find the answer to my question so please don’t recommend me to it, thank you

 

It depends on whether the bores of the block are good at stock size or need to be bored larger... take it to a machine shop and see what they suggest.