in my tranny? sorry there fella, this babys goin in my 1st gen. a tell tale sign of a r151 is a 1 to 2 inch rubber plug on the very bottom of the bellhousing.
From Pirate:
Identification:
G52/54 84-88' are twin stick, use a 8 bolt center section, 6 bolt gear t/case pattern, 21 spline output.
G58 89-95' twin stick, 8 bolt center, 9 bolt chain t/case, 26 spline
W56 85-88' (single stick), 89-95' (twin stick), 10 bolt center, 6 bolt t/case, 21 spline
R151F 86 - 87 (turbo only) will have two housings of four bolts each just like a G52, the difference would be the large rubber plug on the bottom of the bellhousing.