Power steering pump for 1976 Avante

[Hans]

Anyone know what Chevy power steering pump fits a '76 Avante II?  Tried using a '76 Covette pump and the return line nipple hits the block.  Looked at various trucks with the 400 SBC and Camaro ones that put it in roughly the right place but they curl around and would hit on the frame.   At the end of the day I'll probably just put a new pump into the original reservoir but would rather not.