Pulling a 318 and 904 together- advice please!

I know that you are well into this already, but, why not drop it out from underneath? You could then use a set of dolly wheels to roll it around at the body shop...
Reason I am asking is that I am (soon I hope) to install an engine tranny in my Duster and am considering this.
C
BTW, pretty daughter too! When I completed my first restore with my son, I gave him the car...