I ran SRP's on my Z6 for over a year, 12-15psi daily... had detonation problems, bitch *** iridium plugs melted. and the bitch kept going. THey love boost, and they were quiet as ----, none of that diesel sounding ---- you get from vitaras. and you dont have to get them machined.

I would recomend them. they are cheaper than arias, ross

 

buying std forged pistons to put into a used oem block is pretty dumb engine building
piston to wall clearance can be outta wack

 

ya any used block should be bored over if you want to do it right

 

My pistons said JE/SRP and I love them, whether your calling them JE or SRP they are forged and work well for me.