Tuning will help out the trans. I would always suggest a stock tune and a shift kit in that regard though.... shift kit is cheaper but not as easy to install.
I was thinking about getting a shift kit but I think a tuned PCM would give me a better performance all away around.
Thanks for your suggestion!
My 1997 Grand Prix GTP progress build thread! Mods At The Moment: 160+ Amps Alternator. Mods I Will Be Doing In 2015: Speed Daddy Headers, 3.4" Modular Pulley System, Open Air Intake, BillBoost Tune, TransGo SK® 4T65E Transmission Shift Kit, 180* Thermostat