Lets see, Trans appears to be a Peugeot BA/10-5, T-case is an NP231, Front axle dana 30, rear dana 35. Interior was changed, according to the build sheet it came with a bench and mini console. All the chrome has been swapped on, says the front used to be color matched. Slider is original, vent windows aren't. Overall though original or not, thats a very sweet looking truck, and your interior is a mirror image of mine bit tan. Sweet truck man