I used antiseize on anything going into my aluminum heads.

Usually it is just the opposite, because the expansion rate is different, aluminum vs stainless, you will find them in the bilge of your boat. The will loosen and back out on their own. Havent tried the locking bolts but sound like a good investment. That or studs would do the trick.

I would get the ARP SS studs if I were you. I put them on after having to retighten my header bolts several times. Haven't had to retighten them since(60+hrs).

Got the studs and I'm installing them today, thanks guys

You should have called me, I have a few sets on the shelf.