So whats the best way to go about cutting?

I obviously need to pull the console and the carpet. I would like to not have to pull the tranny.

Dayclona so if I understand you correctly. I need to make a cut that goes from the shift hole, to the firewall seem. That cut is going to spread outwards as it makes it closer to the firewall. I will also need to bend or cut the flange under the tranny tunnel. Make a patch weld it in and reassemble? By doing this I will be able to tuck those headers up nice and high and actually pull in my garage without dragging them