[MARKDTN]

It will bolt to the engine so that part is easy. The torque converter may not bolt to your original flexplate holes, I forget. If not an '83 K20 with 350 had a 700R4 option and was still 2-pc rear seal. The torque converter to flexplate bolts are metric so be sure to get the right ones. You can move your rear crossmember. You will need a TV cable and appropriate carb bracket. If it is a Quadrajet you can use the the carb bracket from any of the 83-87 trucks, vans, Caprice etc that had 700R4 transmissions. Your carburetor may or may not have a place to attach the TV cable, but it is CRITICAL that it be hooked up and adjusted. The TH350 yoke will work, but the driveshaft will have to be shortened. How much kind of depends, so you pretty much have to get it installed and measure. You can get a lockup kit from Painless.