Technically speaking are you asking about the engine mounting brackets which bolt to the block?

If so, yes, you need to be careful and as said in your other thread it depends on which engine crossmember you have.

If you mean the rubber bushings ('mounts' as most refer to them) which the brackets sit on then yeah, they are mostly the same as Marc has said BUT the early mk1 Sierra has mounts the same as 4x4, so beware.

All depends what you have to start with or which path you want to go down.

Im about half way through mine, I got standard BOA with BOA engine mounting brackets sat on BOA bushes which is all sat on Sapphire Cosworth engine crossmember with Sapphire Cosworth steering knuckles, ARB, TCA's etc (basically Sapphire Cosworth front end running gear)