Ok, let's get real. Half of that is BS.
Header fitment- yup, that's true. Much easier without torsion bars.
Handling- 100% false. You can handle just as well with torsion bars. Hotchkis cars have handily beaten RMS equipped cars. There's nothing special about the MII suspension from a handling standpoint.
Alignment- What does that even mean? I bet I'm running more extreme alignment numbers on my torsion bar car than you are on your RMS car. -1.1° camber, +6.5° caster, 1/16" toe
Looks- If you're buying suspension for looks, you get what you deserve
Weight loss- 31 lbs manual to manual. Ain't that much.
oil pan fitment- I suppose? There are plenty of aftermarket pans that fit the stock K. Or mostly so. I'm ok with the small notch I knocked out of the engine mount for my Milodon road race pan. Lots easier than a $5k hit for pinto suspension.