Pst? Firmfeel? Hotchkis? Worth it?

I have had a 66 Cuda for 24 years and have done many suspension mods. It currently has a Firm Feel box with a reduced pressure pump, Firm Feel upper control arms, boxed lowers, Hellwig hollow 1 1/4" front sway bar, MP 1.14 torsion bars, Hotchkis strut rods, frame connectors, Hotchkis hollow rear sway bar and rear springs, Stainless Steel 4 piston front brakes and Dr Diff rear disc brakes with crossdrilled front and rear rotors. All this is powered by a " big 340", 4 speed and 3:91 gears and weighs 3274 LBS, I have never driven a BMW 3 or do I want to but I would sure put my ride up against one any day of the week and twice on Sundays! All these manufacturers make great quality stuff!