78 El Camino need trans cross member for 200 R4

I am changing out my turbo 350 trans for a 200 R4 and need a cross member to fit. I want a double hump so I can run dual exhaust without any problem. Will a cross member from a later model that had the R4 in it work. Any suggestions would be appreciated.

thanks

The only way I was able to overcome this on my 1978 Elky was to cut the cross-member and weld my own second loop into it.

I did the same with my 77 and will do the same on my 80, if I ever get to that point!