Great news about the lines.. I have built 1, E-7, and 2 E-Techs, and 2 ASET's. An AI and An AC... All are running good and making money.. I measured the liners and the pistons and compared them to Mack parts and they were the same. The PAI kits come with more parts than a Mack kit, including head gaskets.. the bags of gaskets and o-rings is great.. it even comes with the little sealing balls for the piston cooling tubes, and depending on the level of the kit you buy, you may have new cooling tubes as well.. I also use their oil pumps, and cam kits. Cam kits are better than Macks current kit.. the bushing set for an E-Tech was just over $100.00... you will need to order connecting rod bolts separately.. I have had great service from the PAI parts... At half the cost or less... Jojo