Any A-518 transmission Darts in here ?

I've never looked into this. My son put a A-518 in his B-body. When he was researching the procedure for his B-body, he read that you have to modify the tunnel quite a bit to put one in an A-body. Is that true?

I know the cross member has to be modified but never looked into it otherwise.

Since we are also running a Trans safety shield

the floor had to go up one inch for clearance
that would have left a gap between the floor and cross member

wanting to keep all the cross member we could
we raised the cross member with the floor

a bit more work, but
happy with the results

http://www.forabodiesonly.com/mopar/showthread.php?t=296750