I am using the LPG pistons and got mine from Federal-Mogel . The part number is 980P . They offered them in .020 / .030 / .040 / .060 over bores .
They ran around $38.00 a piece .
Tom
------------------
1984 K-30 w/ 292 / CH465-NP205 ( 32 spline )Dana 60 / GM 14 bolt - 1410 series u-joints / TBI
Pull truck: 2002 HD2500 4X4 Dodge Cummins Turbo Diesel H.O.
NVG 5600 Dana60/80 4.10's
