Too high rpm - overdrive? Keisler?

i got my viper tranny for about the same price as a core 727 and having it rebuilt. it is still a used tranny though. i put new input and output seals in and resealed the case, it works perfect. im not saying the t56 is the best, but it fit the bill for me, and im a lazy auto guy. i looked into the GV, it just didnt appeal to me starting from scratch still have to build a 727, converter, flexplate, buy the gear vendors, and im guessing it too would require chopping on the floor. i actually did have a 727 core, a holeshot converter and the right b&m flexplate, i sold it all though to do the t56.