Originally Posted by Uncle Douglas
Pretty hard to remove the nas 110 saddles and leave enough of the frame for the new extensions to fit over/ sleeve without pulling the rear tub off.
If you cut the sides where they are welded to the chassis the saddles can be pryed and sawed and grinded off and there looks to be enough room to do it tub on. Won't be fun that is for sure. I did it with one of the chassis I had (Charles's I think). What is left of the frame under is another matter. It was tub off for me, but not too bad. JimC did the quarter chassis on his (tub off). Not sure how you could weld that tub on. Maybe you could buy the quarter chassis and leave some of the chassis to weld to, I don't know.
I would go with the 18in extensions and patch the frame rails to get enough to weld to over the quarter chassis. Otherwise you are looking at tub off which is a royal PITA on a NAS 110 with the cage etc. pics might help asses the situation.
Whatever you do, galvanize the replacement as the britpart steel and paint are pretty bad and they rust quickly.
Or, you know, replace the whole frame. :-)