so im going to install a shift kit into my 06 grand prix gxp. does anyone know where the best place to buy them are? i havent had much luck on google finding a gxp shift kit. I know theres different types of kits and this is my daily driver car and im just wanting to put one in to kinda help the tranny last longer. right now it has 143000 miles on it and i have no trans problems yet. and what are the torque specs for the accumulator thats another thing i have not been able to find just yet. any help and/or advice on where to buy or how to install are greatly appreciated as i have never attempted a shift kit before.