anyone use a comp roller cam and lifters in LA small block

WildCat said
I have tried to get info on the roller lifters from Comp Cams and they have not sent or told me anything.

My ? is What mods have to be done to the block to install roller lifters in a 1971 340 block?

I have been told they have some direct replacement lifters for this from a friend. I have heard the lifter bores would need to be bushed to install them form others

Does anyone here have any experience in installing them in an older small block not designed for roller lifters?

We installed the Comp Cams solid roller lifters in a 340 block and needed some grinding on the block to clear the lifters and that was all. But MRL Performance sell solid rollers that will drop in with no grinding to the block and have pressure oiling to the roller bearings.