My 113k mile stock GS455 auto with A/C was a 2.93 non-posi, it would run 14.4-14.7 with one tire smokin thru 2nd gear....
I'll keep the 8.2 and convert to posi, unless i find a cheap and easy swap. i don't need to go overboard as i don't track the car. thanks for all the input Hector