Suspension/Chassis Suggestions - 70 Dart Swinger

I agree, I think I'm set up for success, I'm leaning toward 17 or 18 in wheels. What wheels/backspacing are you using with the 18s, are they custom? I see Enkei on the wheels in your profile pic are those your 18s? I saw a Dart for sale locally a while back with 09+ Charger/Challenger wheels on it so that has me wondering what modern factory take-offs make a good choice? I know the backspacing/offset is not at all what these cars were designed for...

Yeah I have Enkei RPF's on my Duster. In the front they're 18x9, +35 and in the back they're 18x10, +38. They're off the shelf wheels but the fronts were machined a little to open up the hub bore, the RPF's start out at 73.1 mm which is enough to clear the mopar hub but they neck down to a 65mm cap, so I need to have them bored to 73.1 all the way through. The 13" brakes widen the track a little bit, it's about +5mm per side compared to a 73+ mopar disk. But for 275's the +30 to +35 range is where you want to be.

In the back the Dusters have an extra 1" of space in the wheel tubs, and I run a wider 68-70 B body 8 3/4 so the rears wouldn't really work on a Dart, at least not that particular backspace. I have a 1/2" offset and run 295/40/18's, which would take a 3" relocation on a Dart.

img_5983-jpeg-jpg.jpg

I had no idea the Darts could fit that wide of tires, wow.

The 3" relocation really makes a lot of space. 72BBswingers car had a 3" relocation and mini tub, he had 18x12's with 335/30/18's on it and said he still had some space. This is his car (was I guess, he sold it).
006 copy.jpg