I pieced together a custom turbo kit. I'm gonna go buy some bolts to match my T3 turbo to my drag manifold. Can someone tell me the size of the bolts? are they standard or metric? how long? obviously I need 4 of them...

it would help a lot. I really dont' wanna buy a bunch to see which fits (nor do i wish to bring the manifold into the store). But if no one helps, I guess that's what I have to do.