solid roller swap

You'll wanna make sure the lifters you get won't starve the top end for oil. Apparently this was a problem several years ago. The body of the lifter allows oil to flow past and not make it into the top end. Check this article - Install A Roller Camshaft In A Small-Block Upgrade - Mopar Muscle Magazine

I do BELIEVE that many lifters now have fixed the body so this doesn't occur anymore. But you'll wanna double check that the lifters you get don't need any mods to the block to work.