6-71 & Mechanical Fan, and other questions.

I remember seeing a picture of somebody's a-body that had a Roots Blower, Chrysler Radiator & a Mechanical fan. Please chime in, I'd like to know what you did to fit everything in like that (it was a tight fit, if i remember correctly)

I'm getting ready to put my wallet out of its misery and will be installing a Dyers Roots 6-71 setup on my '74 Duster later this month, and I'd like to do any possible core support mods/radiator relocation mods before I paint the car.

Currently, the car is completely assembled (waiting to be torn down) so now would be the time for me to get any measurements for modifications. (factory 318 A/C car, swapped to a 340 with A/C)

I'll be swapping the RV2 compressor for a York Compressor, since the blower & RV2 will both want to occupy the same space :D

Also, I have a Vacuum Reservoir Tank (about 2 gallons) that I salvaged from a 70's Volvo, can I use just a regular Brake Booster check valve to keep the tank from bleeding off stored vacuum (to run the A/C and Cruise Control)