I agree to work on the 60. My old combo ran a best of 11.49 @ 116 with a best 60 of 1.57 and that was a mild 440 in my 3700 lb 63. It was nothing special as I use just SS springs with the longer MP shocks and a 9.5 Dynamic converter that will flash about 4200. But it would always 60 ft in the low 1.60's and the high 1.50's on good hooking tracks. Your loosing a good tenth or more in the 1/4 in your 60. I agree a better converter should help. My 9.5 Dynamic drives great on the street as mine is a street car that I drive much more then I race it. You can get a good working converter that will also drive good on the street. Course anything to do with your 60 time I would be looking at. Ron