[ezraman]

I am sending heads to Ollie's for rebuild. My plan is to replace rings (smoke on start up). Should I consider new P&C's for horse power consideration and overall performance upgrade? Which one's? I have a stock cis system. I have stock exhaust with early heat exchangers, My heat exchangers are allowing smoke inside of the car considering changing them to new ssi's. would exhaust upgrade be a better option?

Thanks