upgraded posi unit.....
to throw that much coin, I strongly suggest you go check
with Strano about the T-2R. Same or better beef, but with
even higher bias ratio and a preload so you get some thrust
even if the other wheel is in the air. The price difference
from the SLP unit is small but the performance is -way-
superior. T-2R rules for the street and autocross and road
course. It is not an ideal drag strip differential, I don't think
it likes to be held in high slip for long periods (unlike the wet
clutch types which, at least, tolerate that kind of thing
better).

