Started in on the rails under the cab today. Cleared all of the junk out of the way and ditched the fuel tank selector thing. I trimmed the carrier bearing crossmember using a scrap as a scribing pattern, but didn't take into consideration that the 11' piece would have more obstacles to deal with, so I still need to clearance some more to get it to sit all the way in.
Cut the lower edge of the frame off from the cab back:
Fitting the rail in place:
As it turns out, the rear cab mount is just above the rail, so I don't have to make any modifications to it. I'm pretty happy about that. Actually, all of the mounts should be able to stay in place and I can just weld the edges to make up for the rivets I had to remove.
