Well from what I know about it, it could chip a piston.... and problems like that. The ubend delete is good, but to go to a smaller pully you should have at LEAST a plog, and 3" dp. Headers would be better of coarse. but if you read the "safely modding your car" thread it will show you how this car has been done up wrong. It is a tuff call, the car could be fine, and you just gotta catch up on the supporting mods, or it could be ready to blow, if that pully has been on there for long, and or ran hard with that pully. From the info I have about the car, I would definetly be scoping ALL the cylinders, for chipping and scoring. Without scoping it you are playing russian roulette on that car.