So I’m putting in a TKO 5-speed. The crossmember is shown below (1st pic from internet): Brackets attach to each side of the subframe and the crossmember bolts to the subframe. I already mounted the subframe to the shell, so today had to fit in the brackets by lowering the back half of subframe enough to get the brackets in. The bolts go in through the top of the subframe as well as the brackets. Learn from my mistake and mount this before installing the subframe! Finally got the bolts and 2 brackets started on both sides. Tomorrow’s project is to tighten the new bolts and re-tighten the subframe. I had enough for one day which took way longer than I had hoped!