'68 318/727 vs 340/727 trans mounts

I didn't realize that 318's had a different trans mount than the 340's until i went shop'n for a replacement. My car was a 318ci, (now a 340ci), the original 727 trans. has been rebuilt.

I went with the 318 style energy suspension replacement, sure it will be fine, but.....

The 340 trans mounts seem to be a "spool" type with a different transmission cross member. (stronger design, no doubt)

My Question to "All" is if the transmission case, (cross member mounting area), was different?

In other words...would (if by chance I found a 340 trans mount/cross member), would it bolt right up to my 318/727 transmission?