Ive had both. My stock clutch was getting bad at my first tranny rebuild at 38k, the Grizzly wasn't too bad until I got the 3.0L and it blew out 8 days after I got the car back. I had about 20k on the Grizzly and the whole clutch disk blew apart. Got the SPEC Stage I clutch now and I love it. Im not too thrilled about the clatter it makes at idle, but if you aren't near anything that the sound bounces off of like another car or a drive through, then you can't notice it. Go with the SPEC!!
