BAD MECHANICS - Thermostat and Radiator Fan Blade

I wouldn't be using any flex fan, too many horror stories
I would follow the advice between my post here and your original post, either the adapter housing, or a port in the intake. Below the thermostat means within a few inches, not the bottom of the tank, block, hose or anywhere else. A water passage in the intake just below the thermostat.
If you can't swing the correct radiator right now, Find the correct molded upper hose, mount it on the thermostat housing, after trimming the hose so it fits at nice right angles get a Sharpie marker and draw a circle around the hose where it touches the radiator, take the radiator out and to a shop and have them weld a proper fitting (bring the hose with you)
GET THE TRANS KICKDOWN CORRECT BEFORE YOU MOVE THE CAR. join a local Mopar club, be nice and ask for help if you need to.

Work on getting other items fixed or tweaked to your liking and plan on getting a proper radiator, clutch fan, & shroud down the road. Shrouds can be found, made, or some measuring at a junkyard can get you one that might need a couple mods.