Downflow VS Crossflow Radiators

I measured the all-out space I had between the frame rails and from the bottom to the hood and which side the inlet came in on and the outlet went out of. I then went to the summit racing site and punched in all those dimensions.. I opted for the side tanks as they would not benefit being in the air window as much as fins would.. now the entire window opening in my a body is filled with radiator fins..
As far as mounting it just making two little stirrups and bolting them to the bottom of the radiator core support with little rubber grommets in them and then buying the Chevy style radiator cap that just bolts to the front of the radiator and to the top of your course support holder. I think they're like under 30 bucks in your choice of black or Chrome... I was pissed because I missed the sale and didn't pull the trigger on about $139 I think I ended up paying like $159... Never even close to a overheating problems since.. and that's a large two core with side tanks...