The SVT Zetec also has a stronger bottom end; better block with forged connecting rods so its more capable of taking a beating without blowing up. You can probably get away with it but you're pusing it...I'd talk to Tom and see what he has to say.zetecfreak said:Well a turbo or sc svt has that compression and makes wicked power. That compression will be fine as long as you run good fuel and get a good tune. If you dont want more than 10 psi, JRSC is cheaper, but if you get it and need more than youll want turbo. From the boost numbers you gave, the compression will help with power and will not hurt the motor unless you do something stupid. The tune will have to be more spot on though.