Its a 69 Satellite, I'm taking out a 318 and putting in a 383. I looked at the caps...they seem pricey. I just need the end out to the bumper which is all straight. I will have to weld in a the K member nut which could be a "pita" with lite gauge metal. I like the tube idea...cut the bad end off, weld the k-member nut on tube, drill some holes for spot welds in the existing frame, slip the tube in, put a few spot welds on all sides to hold it in place. I could finish the bumper end by fabbing some lite gauge metal like OE to cap the tube, weld the connection and finish it off the same way with some spot welds to the tube. I think that will work...