Hello...First off, sorry, I know this thread is very similar to all the other 700R4 Swap threads. I would like a little more information on what needs to be done to complete the swap. Here is my situation: I have a 1989 GMC Sierra EXT Cab 4WD with a 350 that I just had the 700R4 Rebuilt about 3000 miles ago. I picked up a 1985 M1009 with 58000 on the dash. The TH400 will not stay in 3rd gear. I changed the modulator valve, checked the governor, checked the vaccum lines from the Injector pump area, and finally the kick down switch. It still will not stay in third gear. It will shift into 3rd gear above 35 mph if you let off the throttle, but as soon as I give it diesel, it shifts into 2nd. It seems when it's cool it holds 3rd longer under load, but eventually it starts acting up. From what I read on the internet, it is possibly the front pump or sticky valves. Anyways, since I have that 700R4 with a NP241, I just had a few questions. On all the other threads, no one really talked about the the drive shafts, or cross member. Will everything bolt right up with out drilling into the frame and will my stock driveshafts work? From what read, the 700R4 is 2 in longer. I'm assumeing I cannot use my NP241. So will that transfercase pedastal and input spline you mentioned in the other thread work off of the NP241? Also, all I should need is a Diesel 700R4 Torque converter, TV Cable bracket off a 6.2, Some type of Torque converter lock up switch, flex plate off my 350 and some luck. Basically everything should bolt right up correct? Thank you for all the help.