Okay. My current old one was 158 the teeth damage. Had to replace new one. That's for my 84 k10 pickup manual sm465 transmission. I kept look around and that oreilly store sell the flywheel that fit my clutch 11 inch so I count the teeth on the new flywheel it's show 168. Do you think it's work with my stock starter? Want to make sure before I able to put on. I measure the old one and new flywheel it's same. It's about 1/16 different