Yep, been there. Got a .058 over block & almost all pistons are .055 over as you mentioned. Ended up putting the block under the bench. Speed pro has one as mentioned above but you're going to have to hone it out a little for clearance. Also they way a ton. Not any lighter than the originals. I bought 'em, weighed 'em & immediately sent them back. It was somewhere in the 1125-1150 gram range with pin, I believe.

Honestly, I would get a set custom made if you're set on using that block. That way you can get the skirt clearance you need without the weight of the junk Speed Pros. Some guys don't charge too much extra just the wait time.

Oh ya & even if there is a listing for a .060 piston chances are it's not on the shelf at the manufacturer. Called them all back in may-june. They rarely run that piston/size, once a year or some b.s.