"Compression height of this piston is 1.992". .140" quench dome, centered pin. Suggest claying quench dome for clearance. Closed chamber heads require the quench dome to be machined down.
Ring set pt. no. 4320AM8. Kit no. KB184KTM. "

what this means is that the pistons need to be mocked up in the block and measured with your heads for clearance, and machined appropriately.

so it's kind of a machine shop job for that part of the assembly at least.