Loop throttle cable below intake manifold. Drop battery down on the cross member. Injector wire and thermostat housing harness could be ran under the intake manifold. Lower coil pack and anything on top of the firewall could be moved down. There are plenty of other holes for mounting. You didn't say anything about power steering but I'm gonna guess you wanna keep that..
Here is the link to my tuck I did from beginning to end.
http://www.dsmtalk.com/forums/showth...ight=wire+tuck
Annndd here is the pic of my bay to give you some idea's.
Threaded Mode