The "lowered look" might be neat to look at, but it can result in several other dynamics! Having the vehicle low enough that you can knock the reflectors off of the asphalt, as you aim for and drive over them, might be fun, but can cause some other issues of visibility of lane divider markings in poor weather.
The lowered look is fine if you only drive on smooth roads, flat roads, and any drive-way approaches are wide enough to really "angle" across them. One way to get people to look at your vehicle, though, as they see the additional efforts you have to go through just to drive the vehicle. BTAIM
I had a friend that routinely "cut coils" to lower his GM vehicles. Looked good on them, being an inch or so lower. The rode a bit more firmly, too. BUT he was in a road environment in the city and didn't require any real extra attention to not "drag bottom".
Chrysler products, by apparent design, have MORE rear overhang than many GM cars seem to. That means "dragging the pipes" on steeper-than-normal driveway approaches. With nothing more than normally-sagged rear springs! Which was the subject of an early 1960s Monroe Load-Leveller shock print ad!
BUT to me, one of the great attributes of Chrysler Products, especially C-bodies, is how they drive on the road, at speed. The torsion bar front suspension, complimented by the rear assymetrical leaf springs, and with firm OEM shocks, are a JOY to enjoy. Add-in the Chrysler front suspension geometry that keeps the outside wheel better-braced against the curve, and it works wonderfully! One reason many law enforcement operatives, who have found the need to drive over 70mph "in pursuit" liked their Mopars for handling performance in the higher speed ranges. The ride quality of torsion bars is better than coil springs, too!
And people seem to think they need to spend $$$$$$ to get something "newer" and allegedly better? Are they too used to dealing with a typical GM suspension system, not realizing that what they have in a Chrysler torsion bar/leaf spring suspension is better in many ways? If the current economy so good that people don't mind spending money on "toys"?
Seems like there is an allegedly much-lauded front frame section Super Touring replacement (with coil-overs and rack-and-pinion steering) for E-bodies? Perhaps it can be adapted to something larger than a B/E-body? At what cost??????
Chrysler designed their cars differently, back then, for a reason. Just that many who knew about these things aren't around to ask anymore. I suspect, based on engineering more than anything else. Cars might be more "generic" in their designs these days, but they certainly we NOT that way in the '50s-'80s!
Enjoy!
CBODY67