[48cj2a]

The 50-410 adapter is for the figure 8 NP205...but is for the slip yoke 4L80E (2wd).

The adapter assembly fits 1971-79 GM NP205 with a figure 8 front bolt pattern, and is designed to replace the 10 or 27 spline male inputs. If the GM NP205 is equipped with a 32 spline female input, the new 32 spline input that is included in the kit will not be needed. Call our tech line for more info.

If you are rebuilding the transmission I would think a tranny shop would swap outputs if its serviceable and they are rebuilding it for you and getting paid for the rebuild...worth an negotiation tactic.

The GM 4L80 has a case length of 26", 17 bolts for holding the oil pan in position. The rear side of the transmission case
will have a hex shaped bolt pattern that uses 6 bolts. There are several various lengths of output shafts that the transmission
has been equipped with and you will need the 6-1/2" slip yoke output shaft GM# 24218219 (1991 to 1996) or GM#
24204289 (1997 to 2007). This shaft is fully splined. Any other 2WD output shaft will not work.