WHich is the correct power steering pump style for a 69 small block (350). The squarish one used on the 70's models or the round one with the welded filler neck? Do you know what I mean w'o seeing pics?

Round one like this:

http://www.firewheelclassics.com/detail.asp?product_id=STP10_13

I think my pump is original it is round with an oval filler neck.