HELP with P/S pump ID!!!

The Saginaw pump and brackets will fit any LA engine. There are issues where they may not fit a particular application due to pulley alignment or other ancilliary devices such as an air pump.

I have one of these on a 318 Demon with A/C and an idler pulley. There are no problems with this fitment.

I suppose as long as the pulley on the pump will line up with a ring on the crankshaft pulley, this pump will work on your 69 Barracuda. IMO, the Saginaw pump is better than the Federal Mogul pump that was also used about the same time. The Saginaw is harder to "beat" when changing course rapidly. The one thing I don't like about the Saginaw pump is the mini-canned ham body is easier to bend than the body on the Federal.

FWIW: Chrysler began using GM pumps as far back as 1965. Here's some background information. http://www.hemmings.com/hmn/stories/2006/09/01/hmn_feature34.html