In general, the 440s came with the Group27 70A red cap battery.
Recently Antique Auto Battery was the only game in town but I've heard they do not have anything in the pipeline anymore.
All the above! I like steelies, rallyes, old-school Cragar and aftermarket, keep a couple sets depending on your mood! Google image "Cuda wheels" and you'll find pictures of the combos you're thinking of, and of course it'll be a 4-hour rabbit hole of looking at cool Cuda's.
It's hard to tell who makes what style anymore, every wheel company has similar designs now (and so many are not point-of-manufacture). That tri-color silver/limelight/flat black Cuda looks similar to torq-thrusts but concave, so I'm thinking USMags. The bowtie might be 2 piece custom barrel...
I didn't look at all the links, but I would try to narrow down must have options and deal breakers to find a car. You have a large range, but if you have the $ for a R/T six pack, go for it.
Ditto @challenger6pak reply. The R/T is highly optioned, so most likely one would order magnums or...
Like others said, with shipping you'd be best served finding a complete car, but if non-running it may have you chasing engine/electrical parts and then shipping.
Do some research on the model years to find out what look and engine option you want, and extent of originality. That will narrow it...
I'd like to buy your dad a beer and you a lemonade.
For a 70, $6,000 may get you a basketcase no motor, and maybe $18,000 for an all-there driver-quality body/interior with non-running motor. You might want to look at 73-74 where demand isn't as high and prices might be more reasonable with...
The first 3 links above are for a 70 Chally.
2nd and 4th links above show the heater box resto tips & descriptions in the photos.
Til you find the link you're lookin for.
Any of these help?
Restore Your Mopar's A/C System - Tech Articles - Mopar Muscle Magazine
Restore Your Mopar's A/C System Part II - Tech Articles - Mopar Muscle Magazine
Restore Your Mopar's A/C System Part III - Tech Articles - Mopar Muscle Magazine
Mopar Heater And A/C Restoration - Mopar...
Just to get this thread going,
70-74 Cuda's had narrow seam.
70-71 Chally's had wide seam.
I think 72 Chally's either continued wide or transitioned to narrow, someone pipe in.
73-74 Chally's carried on narrow.