Yes, I ended up taking it to a pro, after the left sprocket didn't seat in the divet properly and I got my cam timing all messed up when the left sprocket just spun. I was worried I had bent a valve, as it took a lot of force to rotate the engine in 6th gear. But my indep. wrench did a leakdown and said it was fine. Runs and sounds fine too 3k miles later. However, it's starting to blow smoke on startup now, which has me worried. This was a HUGE fuss for not as much improvement as I was expecting. Might be right for others, but I wouldn't spend this kind of money or effort again.
'96 993 C2