Hi guys, I have a 1974 datsun 620 pick up. One day I decided to clean up the cab, pulled the bech seat, carpet, almost everything out of there, I knew that water was getting inside the cab, but I couldn't believe what I found, the floors are all full of rust, in some spots the metal is so thing I can punch a hole thru it. I'm a mechanic not a body man, I dont know the first thing when it comes to fixing metal and patching things up, so that means I'm gonna have to pay someone to fix my pick up cab, but that's gonna be expensive. So my friend gave me an idea, I can get a cab from the junk yard, they go for $250 and I can pick the best looking one, the one that doesn't need $1000 dollars worth of work, but since I'm in the process of doing that, I was wondering if it's possible to put a later year cab in my 1974 620, the cab on my 620 is a normal cab, but can I replace it with a later year king cab, I always like the idea of having a little bit of extra room. I'm sure I'm not the first one who ever thought of doing something like this, so for those of you who tried something like this before, can you provide some much needed advice on what it takes to switch cabs, or if it's even possible. Thanx.