After having trouble with my T-5 the last time at the track, I've determined that I had some issues with my stock shifter. I put a new in last night, and what a difference that made. I went with a Hurst M-7210-M from Ford Racing Performance Parts. Easy install and shifts very smoothly. So maybe I have some more time left in my tranny.

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88 Mustang LX mild 302, no laughing gas, and the rest is secret. Best 1/8th 7.843 @ 87.98, best 1/4 12.427 @ 111.20, best 60 1.601
89 Mustang LX wheels up @ Pinks All Out