I guess I didn’t know that the stock lower pulley was a weakness on a 2.9 Whipple car at just 600 rwhp, but I nailed it in second then hit third and the car fell on its face and the battery light came on. I assumed a broken belt, but it was still on. The 14 mm hex is just turning inside the pulley when the car is running so no boost and no alternator. I looked for an aftermarket solution and was doing some homework and didn’t see any aftermarket “caged” pulleys. So I got a stock one on the way from eBay. Is it just going to break again? Is there any caged alternatives? I saw some broken cranks and heard stories or worn main bearings on no. Caged pulleys so I wasn’t comfortable with those