as far as the trans adapter... this guy is makeing them.
used to adapt a Toyota W series transmission, to an EJ engine.
Here is a few pics of my RWD subaru. it is using a 05 WRX trans with the center diff spooled so it only uses the front axles. dont know how much power it will hold, but its been ok for now...
running a 94 SVX EG33 with custom mounted Eaton M90 Supercharger
more information at http://www.ultimatesubaru.org/forum/...d.php?t=134714