605 steering box (part #)

[rocetwildone]

Looking for the GM part number for the 605 steering box?3 bolt round top cover,
Or application?

[super15f]

napa # 88-277057

[LFMotorsports]

double check the output splines. I believe there are 1" and 3/4". I have a 3/4" output spline and it was a bear trying to find the correct box. I have a part# 6531 from O'Rielly's but it is the 3/4" spline out and has a single nut on top, not 3 bolts but round cover.

Just information.