My 53 3 ton has a 292 as well by PO, using a couple of custom 1/4" brackets welded to frame. Although we had to remove rebuild n replace. But she works well. I've tire issues over 53mph that stop me from pushing farther, but she's only at about 3600rpm, with a SM420 and 2 speed rear. But that's fast enough for me at 12260lbs of rolling weight. Haven't actually calculated mileage yet tho.
