shift kits
#3
Trans go makes a good kit. also do the vette servo and maybe the billet 4th servo.
i have the vette servo and i like it. wish i had done the 4th servo at the same time.
look up oregon performance.
#4
If you are towing then I would suggest the 4th servo, but if you only want firmer shifts while running WOT or street racing then either the shift kit or corvette servo helps. My servo helps 1-2 and 2-3. The 4th servo is mainly for towing so the tranny can hold onto overdrive better with a load. I installed the vette servo and with the tune took off some TM(torque managment), or added line pressure and I get a 2nd gear scratch even at 1/2 throttle.