I will through this in and if I am wrong someone correct me, but when he has the aline bordering done will he have and issue bolting up his tranny? miss alinement?
It's possible depending on how much has to be machined and how good alignment was to begin with. Can also loosen the timing chain a bit.
Caps will be machined down on there mating surface creating a semi oval shape and then bored back to round. Material is removed from the block side also in the process effectively raising the crank centerline a bit.