This listing is for an engine re-ring kit compatible replacement for 1987-1996 Chevrolet GMC trucks with the 350ci (5.7L) V-8 VIN-"K" (TBI) throttle Body Engine."K" being the 8th digit in vehicle VIN Plate. Includes: Cast Piston Ring Set ( STD, .020, & .030 over sizes available), complete engine overhaul gasket set, Engine Rod Bearing Set & Main Bearing Set ( STD, .001, .010, .020, .030 & .040 under sizes available) . This is a Standard/Stock Size Kit. PLEASE CALL or MESSAGE US WITH THE BORE SIZE AND BEARING SIZES YOU NEED TO VERIFY AVAILABILITY BEFORE ORDERING, OTHERWISE YOUR KIT WILL SHIP WITH ALL STANDARD SIZES.