i would use arp head bolts as they are stronger and re-usable .... will have no probs running low comp on a N/A engine i done it for atlesat a year ull just find the power band is higher up the revs .....piston rings id go for VW ones or new pistons .... as for the head if you want it all done and running in one weekend then id go for a recon head .... hope this helps