Aftermarket Chassis, Which one for best ride quality

[SCOTI]

If you're just wanting a chassis, Roadster Shop SPEC or Ride series chassis would be my choice.

That being said, I 101% agree w/theastronaut & SkinnyG regarding the use of what's already under the sheet metal.

A slightly lower center of gravity provides a more modern feel. Drop spindles allows 2 -3" of drop w/o impacting the ride quality as far as spring & shock compression distances. As indicated in an earlier post, the best ride quality is easiest to achieve using the longest travel range possible. Drop spindles also allow the easy disc brake adaption.

Even the factory front A-arms work very well once a simple mod is done to achieve up to date alignment specs.

I'd personally use a stock chassis w/some quality bolt-on parts for a mild driver vs a chassis. Take all that money the chassis would cost & use it on a quality drivetrain w/an OD transmission & some ice-cold A/C to enjoy the retirement years in comfort.