Im building an ls vtec right now. My setup is a b18a1 block with stock pistons, gsr water pump, arp rod bolts, gsr oil pump, and brand new gsr head. What kind of horsepower am i looking at with the stock ls pistons? Should i get some different pistons, or are these fine? I plan on cams later

 

i'd go with USDM type-r pistons. that will get your compression higher. the LS pistons are better for boost