I am getting ready to drop in my fresh 4.3l and the trany that is with it is the THM200-4R and the one that came out is the TMH700-R4. Looking at the transmission's side by side the dimensions are pretty much the same but the bracket for the crossmember is in a different spot. Do i need the bracket that mounts to the transmission itself or do i need to swap out the entire crossmember all together. This is my only snag right now and its holding me up from getting this thing in and fired up. Any help would be appreciated