I have a 1990 f150 reg cab long bed. Now the cab is rotted out. Holes along the drip rails holes in the drivers cab corner and all along the back of the cab. It also has alot of rust on the passenger floor. Now I wanted someones opinion on whether to patch the cab I have or should I go to a salvage yard and get another one. Now I am 15 and am on a budget. If I do replace the cab how hard is it to take off the cab and put the new one on? I If you want pics Ill gladly upload them. thanks for your advice.

 

Without actually seeing the extent of the damage, no one can say whether you should repair or replace the cab. Without tearing out the interior and looking at all the sheet metal, it's highly unlikely that you yourself know how much damage there is.

Repairing sheet metal isn't hard but you need a welder. I believe LMC makes replacement panels for your truck.

 

I have torn the interior out the rust is severe in the drip rails and in the cab corner of the truck. Ill upload some images later today.

 

Cab swaps are not as involved as everyone thinks they are. If it is as severe as it sounds I suggest picking up a nice rust free cab and swapping it.