Killed another cam, need to go roller, need recommendations

Did I read this wrong or not understand it correctly? The one guy said he used a Chevy lifter in the bore by using a smaller bushing? Does that mean he didn’t bore out the lifter bore and just pressed in the 9.04 ish sized bushing to use the .842 ish sized lifter? Just trying to learn. Thanks. Kim

Honestly I didn’t follow that post. Not sure what he’s talking about. I’ll have to read it later.