Hello, I am new to forum and I have owned a 1981 GMC for sevveral years.Been close to selling a few times but since the body and frame are still quite good (engine compression is 110 unofficially) , it still runs...I think I would like to start restoring it because I love the body and how it handles all my flower farm materials/lumber etc. I am not a mechanic but have a few who are willing to work on it here and there. I am looking for info on
1) what tire/rim options are for this truck it has 8 lugs and 16.5 at the moment hard to find 16.5 tires so far
2)muffler options
3) maybe how long it will run at 110 compression?
Any tips, advice or info on this model would be great!