The excursion went well, and I bought the engines on the spot, one look and I knew...........
Got them home and found I had not one, but two 1973 440's! which go as follow;
3698830-440-8, RV stamped on pad, 4-12-73 production date, Forged Steel crank with 3641371 balancer, 3751213 motorhome heads, Standard bore.
3698830-440-8, a number letter sequence stamped, will need to clean up to ID, 3-6-73 production date, cast crank machined to match connecting rods, 30 over bore with new connecting rod's, pistons and rings, '68-70 906 heads with a port and polish, block has been line bored and decked.
I dug through the parts and there are two good cams, one from the motorhome 440, the other an aftermarket beefy cam from the orange engine, I have all kinds of parts. Including a 187 C body oil pan and pickup.
I would call this a success. I plan to use the RV 440 as it is still standard bore and has the steel crank.....
Nick