When I put a SBC in my S10 frame, I thought I would be smart and use a kit that would make things easy, , and save me from having to make my own mounts.
So I purchased this
https://www.summitracing.com/parts/trd-9906
Well, the passenger side did not fit the S10 bolt pattern in the frame, and after putting stock SBC exhaust manifolds on, I see I need to raise the engine about 3/4 of an inch, as they are just touching the upper control arm. (maybe headers would clear it?)
This is a project for this winter.
Sorry, can't help you on what to buy, but hopefully helped on what not to buy.