Here is how my radiator went in where the A/C used to be. I know there are other posts around about it but this may clarify a few things.
AFCO scirocco style radiator
1G DSM water neck with filler cap
14" universal 1.25"-1.5" Radiator hose
16" universal 1.25"-1.5" Radiator hose
The hoses can be found at Kragen, just ask the pimpled kid to go look around in back for them.
New thermostat 180*
Here is how far back I tucked it in:
You can see there is plenty of room on either side now for 3" IC pipes
I cut some aluminum (of course it's not road sign material...that would be illegal) for the fan shroud leaving the sides open for better flow
To mount it I just screwed the bottom two flanges down into the support, I am trying to come up with a way to mount the top, but for now it is in there pretty well.