im new here and have a question. whats size bolts do i need to bolt up my stock exhaust manifolds back to my 95 lt1 engine with aluminum heads?

 

with one the studs or bolts?

 

the studs are 3/8-16 x 1 3/8 i found one close at a local hardware store cause gm wants 4.25 a piece and u have to buy a package of 5. f that lol

 

thanks for the help..i guess i need the bolts im confused about the studs? i purchased a 95 lt1 engine with no exhaust manifold and just need the bolts to bolt them up but i guess the size i need are 3/8-16 1/38 right