Got the transmission tunnel and parts of the firewall out as well as the remaining brake and fuel lines. The husk is now well and truly a husk.
Some might ask "why the firewall?" when i have a perfectly good Brat firewall and my response is to preserve the mounting hole patterns for the Impreza parts like the brake master cylinder and passthroughs. I may not need them all but this way I at least have good templates or even pieces to splice in where I need them later.
Getting the Impreza body scrapped this week and putting the brat back up on stands to get the rear end removed.
Looking at it I assumed the removal would be an easier task than it was - there's way more structural stuff in there than it appears at first glance, especially were I've cut it. Took me much longer than anticipated to finish the removal, especially since I was using a 4.5" angle grinder to do it. Were I to do this again or make suggestions to other folks - use a good reciprocating saw at the support ribs - it will make for much cleaner cuts.