Comp 892 BB Roller lifters in a SBM?

Suggest you call Comp and ask if they can fit. If dimensions are right and the oil band will not pass by where the upper lifter bore chamfer begins with a margin of safety it could work.

I have known others to request link bars from one type of lifter added to another when they purchased new lifters from Comp. Comp may also offer the service for a fee on your lifters.