849-001 is still a valid Dorman number. I think maybe your parts counterman doesn't stock 'em and doesn't want to order 'em, or perhaps they're otherwise "no longer available" from his store.
See also this thread.
The '093 studs oughtta work fine. You're right, they're a better match for the originals than the '094. I'll go in and change the recommendation if I can find it.
The frontmost and rearmost studs seem the most problem-prone (bending, breaking, etc.). I've had a lot less trouble with the studs in the middle. That said, they all go through thousands of heat/cool cycles over the years, and while there is some risk of breakage whenever you remove an old stud, I'd much rather deal with it on the bench with everything accessible than under the hood after the manifolds are installed. Remember, if a stud's one torque away from breaking off, it is going to break off either when you attempt to remove it...or when you attempt to tighten its nut. You get to choose. I know what my choice is!
