A few questions if you don't mind:
How hard was it to cut out the firewall, floor pan, and trunk?
How hard was it to reseat on the chassis in terms of fitment?
Is this possible without the assistance of a garage?
What kind of rear end are you putting on this?
I was told by Kevin Kosir at Art Morrison that to drop the body back on to the frame with a C-5 front end would limit the ride height and the wheels would not tuck under the wells but it looks like they tuck under just fine on your ride. Was there something you did to modify this? He suggested their IFS front end.