The first style transmission cross member for manual transmission 3 speed and “maybe” early 4 speed transmissions was a solid, with no rubber side attachment brackets, cross member. The second style manual transmission that was used for 4-speeds and maybe 3-speeds, from that point of introduction on, had a single rubber mount on the ends of the cross member. The automatic transmission cross bar used two rubber mounts on both ends of the cross member. Pics of all three styles shown below.
