Hurst floor ratchet shifter install ?

I bought a B&M w/o a manual. can I run the cable through the firewall or drill a home in the tunnel. I am building a custom console so it will not be attached to the floor.

Thanks
ian.

we also posted on slant six org and got this responce w/instaltion instructions.
http://www.slantsix.org/forum/viewtopic.php?p=258540#258540