73 elky rust problems/ need answers(PLEASE)

To any one that might have had a problem with rust,,, i just got this elky 73 yesterday... its been sitting for a couple of yrs i have had my eye on it for a while,,, it was sitting under a tree, but its all there and it even started,over all about a 5 out of a 10 i knew that going into this project,,,, ive got new front fenders for it so thats not a problem,, a new hood if need be,,, but the rust i need to remove is behind the drivers door,under the bed of the box,,, the inside fender wells look pretty wll shot, do i need to remove the whole cab and box off the frame to do this???? im a welder so welding it up is no problem,,, and how much of a hassle is it to get the cab and box off as one piece,,, can i find new sheet metel for those parts or am i going to have to make my own,, i dont plan on selling this car so time is on my side for this,, i wasent planing on a frame up this first yr out,, so a little freindly help would go a long ways,,,, thank you your friend on vancover island,b.c. canada ~~~~~~ panodano~~~~~~~~

hello, I recently read your posting and found that you were in canada. thats awsome! Ive been having a real hard time finding from fenders for my 75 elcamino in canada. could you help me out and tell me where you got yours?
it would be a great help!

I cant say much but Canada rocks!! Yeahhhhh!!