I have a 77 blazer with a turbo 350 and 203. I recently lost all of the forward gears in that transmission. I have acquired a turbo 400 with a 208 transfercase that is in good shape out of a early 80s 3/4 ton and i can get the front driveshaft easily. What do i need to do to make the rear driveshaft work and will my old crossmember work because i dont have a new one. Is this swap worth the hassle or should i just rebuild the turbo 350. I am on a very tight budget also because i am in high school and dont currently have a job. Thank you and forgive me if i didnt give enough info because this is my first post.