Works Great but must modify timing cover!
I purchased two of these, the first one I put on my 2002 Corvette Z06 5.7 LS Engine and it works great for over two years and the second one I put on my 2003 GMC Sierra with a 6.0 LS Engine and it is still working good after over a year.  I had tried several single roller sets and all 3 sets seemed a little looser then I would like but when I put this double roller set on both engines the timing set was perfect!!!  I will buy more but as stated you will need to shave or grind down a couple small spots on the timing cover to fit perfect but well work the time.
Rating: 5 stars