Hydraulic Roller Lifters w/LA Block?

Hey my bad, been really busy. Just had the chance to follow up with the the shop again yesterday...

OK - so we've pretty much looked into every possible approach to solving this issue, including all of the solutions proposed in this thread, as well as elsewhere. Unfortunately so far no one, neither; MRL nor Hughes nor Shaver nor Isky nor Comp, have a foolproof solution for reliably retrofitting a 70's era small block LA motor to a hydraulic roller cam and valve-train setup without potentially requiring costly specialized machine work.

Since my particular LA block has large chamfers on the lifter bores I would essentially need to have the lifter bores sleeved at a highly reputable machine shop and at a considerable cost. It's possible that other LA blocks do not have these chamfers or are much smaller and in these cases the aforementioned solutions may infact work just fine.

I'm not so lucky though and for the cost of having the lifter bores sleeved I would rather just step it up to solid rollers which we know will DEFINATELY work and also make the most power. So yeah, that's the plan now. Will swing by this week when he's back from vacation to discuss the specifics and price etc.