bummer bout the hg... i feel for ya
your machine shop will be able to tell you what thickness hg you will need... also the stock one from toyota is not metal... it is still a composite gasket
don't forget to torque the head to 72ft lbs and new head bolts
do you know how many times your head has been skimmed in total?
if you want to go the easy way out and be good for everyday driving and 250-300hp the standard toyota one will be fine... get another head that hasn't been skimmed, new toyota head gasket, new head bolts, slap together torque to 72ft lbs and away you go
just be sure there aren't any major defects in your block tho... pitting etc or the hg will go again
good luck with it
