its been a while i havent asked anything.
" do i need to buy stronger head bolt? "

i have forged pistons & rods
Block is posted. I have all the crap all around needed and iam planning 20psi
stock crank d15z6 engine

iam runing 14 psi @ the moment with head bolt from a Opel Corsa :P

 

Damnn do the Opel Corsa bolt fit
Jus maybe for some insurance I would get ARP head studs.

 

I'll try to see how the corsa go
They were the same. i bought them new soo they should be not too bad...

 

How much for the Corsa Head Bolts??