clincher piston tolerance

I am doing an engine from 1200 to 1260 with a wiseco domes piston kit. the guy that is going to do the bores is asking the tolerance between the piston and the wall?
could you guy help?

2 thou ( 0.051mm)
Make sure he bores the cylinders in either 3 - 1 - 4 - 2 or 2 - 4 -1 - 3 sequence to avoid inter cylinder heat transference which will skew the finished clearances unless the block is allowed to fully cool between each pass.

Thank you very much.