Wife Bought A 70 Rs 4-sp. It Has Manaul Steering And I'm Going To Put Power On It.i Have A P.s. Box From A 72 Elcamino I'm Told Will Work, But I Don't Think The Pitman Arm Will Work?? Anybody Know The Best Way To Do This Swap? Should I Not Use The 72 El. Box? Any Insight Appreciated.