so ever since I bought my 03 gt at 160k miles I changed the fluid and added the speed source brass shifter bushing and rear lower engine poly mount. the latter helped with the wheel hop and I had hoped that the shifter bushings would help with the shifting, especially with the 2nd to 3rd gear upshift at WOT....but it didn't. it doesn't happen all the time but majority of the time it happens.
here's the scenario, going full throttle up to 8k RPMs in 2nd gear and quickly upshifting to 3rd but it wont go in, like hitting a wall. so I would have to let go of the shifter to let it back into neutral then gradually ease into shifting to 3rd will it accept it.
what would cause this issue or what would fix this? a couple ppl on the fb group suggested a short shifter? this shifting thing is frustrating, especially when I would like to drive the car spiriting around.