[914efi]

I did this last winter as a repair rather than a big budget upgrade. Take off heads ( I removed all heads and cam hsg together), slide cyls out far enough to remove wrist pins (heat pistons with heat gun, they will slide out) and remove without taking pistons out of bores. Decide how to remove studs ( I MIG welded nuts on and used the MIG to heat the stud by laying a bead near the base if it was long).

Clean stud hole, I ground flutes into a stud and chased threads with it so as not to cut more than needed. I used basic steel studs, nothing fancy.

Then reassemble and have fun. I would say the whole thing was under a grand.