I used this to replace the rockers on the right side of my Pentastar POS with the infamous rocker failure. The tools worked very well and the tools didn't break as I read in their reviews which is the case with other brands. I didn't have to do the left side, so I can't comment on the effectiveness of the locking pin tool. Theft called me 500+ just to open the valve cover and see and worst case scenario "maybe 2800". . After buying a set of rocker arms, lifters, new gaskets and these tools, I only broke a 200 after changing the oil to remove the metal flakes. Works like a top again. If you're mechanically inclined, this is a deal well worth your hard-earned dollars.
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