Quote:
Originally Posted by Ky Mudhunter
I have both a regular cab and extended cab 1st gen trucks. I can get you measurements of them if you want. I would sell the extended cab if you are interested. It is just a body, no frame. The bed was shortened to fit the wheelbase on a k5 frame.

|
Just for reference purposes.
Stock wheelbase for extended cab S-10 (1st and 2nd gen) is 122.9".
The factory K5 wheelbase is 106.5" in regards to the picture above with an extended cab S-10 on a K5 frame, and assuming he kept the axles in the same location.
Assuming you want to keep it pretty low the front axle will need to be stretched forward quite a bit to clear the firewall with 39.5" tires, plus it will help with approach angles. I think you will be able to stay right around 117" but probably won't have a lot of play room without getting into the cab with either the front or rear tires.