Help me build my SB Stroker

What he said above is good advice, the less you bore the thicker the cylinder walls will be and that will make for a stronger block that runs cooler. And the early 360s do have the thicker 340 sleeves. Its the thin wall 440 that is the myth.

If you can get it to clean up with a 4.060" bore then off the shelf pistons are available. I went with the Keith Black KB745 step dish on my 414 SB stroker. With closed chamber edelbrocks milled to 62 cc, zero deck pistons, and .039" head gasket I will have 10.3:1 compression.

You should also buy the book "How to Build Big Inch Small Block Strokers". Tons of good information in there.