Like Duke, I would love to see some slugs w/ domes for stock stroke with 5.315 and 5.4, and even with the Boss/289 5.155s. I am stymied at the moment on two engines, trying to build the funds for custom pistons for one each 5.315 & 5.4" rod Boss, one of which will be .060 over. If you had 'em, I would buy 'em. SRP has a Cleveland piston that is just about right for the 5.4 rod engine (1.3 CH), but it is flat-top with the one relief...not enough compression even with 57CC +/- chambers, and I don't think they make it in .060. I would even buy a set for a 302 Clevor w/ open heads, with a dome as Andy suggested. I would not buy any (for 8.2/8.206 blocks) for more than a .25 stroker, but realistically these days, more stroke seems more popular.
"If you're under control, you're not going fast enough." ---Parnelli Jones on Trans Am racing.