Welcome! From what I can see from the pics you have a good one. As far as the choke, it probably has some crap in it from setting. A good cleaning or rebuild kit should fix the problem. You can do the bed yourself by going to GMC Paul's website
http://www.gmcpaulstruckparts.com/47...dWood_Info.htm.
He has all the specs to cut it yourself. I did mine and I saved a lot of money. Good luck and nice find!