I have to agree with Moparfan, if it's a tires but rare and/or numbers matching car, then a restoration would be in order, if it's a survivor......I'd just leave it be, but a well used (up;) ), garden variety, /6 or small block car should really be able to go either way without too many people getting upset though.
As for Dave Zinn's '49 Dodge, I'd rip off the Chevy and Ford junk and look to go all Mopar on it. Maybe Volare or Diplomat Front Suspension (not sure if I'd use the Torsion Bars or Magnum Force's coilover conversion though, ZJ or WJ Grand Cherokee based rear suspension (it's a 4 link solid axle arragement ) then probably use a 5.2/5.9l V8 and 4 speed or late model Hemi/5speed auto out of a truck or LX car if I were going that far.