got the head off not good news at all,no.3and 4 piston have a couple of pieces missing.will post some pictures later.perkins wants over 600.00 per,piston tis issn't a typeO.So I'm going to put some 5.9 cummins pistons and rings in the going from 3.937 bore to 4.020 from 365 to 381 ci. i have a few pistons on hand already.just have to mill very little off the top and open my perkins ristpin up .040.
i have to use what I have laying around poor peaple have poor ways that is what my dad always said when I was going up.my wife say's I will never go up.
Dale