II recently built the trans in my gtp, I was coming home from summit racing store in ga from getting the fpr and an fittings I needed to fix my car and keep it from running so rich. While coming home I decided tosee what the car would do from a 80mph role. I went wot and boost peaked at 13 psi at 6200 rpm in 3rd gear. I lifted at 110mph due to traffics ahead of me. Couple miles up the road I got off at my exit. While sitting at traffics light I turned the radio down to talk to my friend and once light changed I started accelerating and heard a knocking, at first thought it was someone else. I lifted off the throttle and it went away. I gave it more throttle and heard the knock again. Car just hit 173k miles. While I had engine out I checked the rod bearings and they looked great with no signs of wear. Retorqued rod and put new oil pan gasket on. I'm hoping that removing that rod cap didn't cause this failure. I will be removing engine this weekend and post results of what I find.