Google Remflex 6022 gaskets,they're your friends as far as header gaskets go. The biggest advantage is they don't need re-torquing and they'll absorb any header flange mis-alignment you might have.They have a good rep in the hi-po world of boosted or nitrous fed trucks,that generate alot more exhaust heat then a naturally aspirated basically stock truck does.Invest in some good quality gear wrenches,and stay away from the Stage 8's,you can't get all the locking clips on them,and you'll hate the s.o.b who sold them to you,if you ever have to remove the headers down the road,stick with the bolts that come with the headers,they're already paid for.