On strictly a cost basis I think the Camaro would still come out ahead, especially if you could find a Camaro with a rusty body for 500 and use the rear axle as well.
One extra cost for the MII style is power steering. I think most kits come with a manual rack standard, power is extra cost? not sure.
All MII kits I've seen use urethane bushings in the control arms, stock rubber bushings are still available for Camaro = no squeaks and better/quieter ride.
You're going to pay a pro to burn it in either way so it's a wash there.
Four Ball Joints, Eight Bushings, Four Tie Rod Ends, Two Tie Rod Sleeves, Sway Bar Link Kit & Idler Arm kit from Eckler's $370
Rebuilt steering box $150 (I went with a low mileage used S10 box for quick ratio)
Front brake rotors, pads, calipers, flexible brake lines and bearings $250
Labor to install ball joints and bushings $100
So under $900 to refurbish the clip, add another 100 for the springs of your choice, stock or dropped from Moog or Eaton unless you are going with bags.
A GM subframe is
much stronger than an aftermarket MII style kit. All of the control arm mounting bolts are in double shear and it's not prone to cracking. Take a lot at what the chassis are under stock cars at any local race track- F-body/G-body GM clips. Never seen a race car with MII suspension, must be a reason for that!
Edit: Having said that I did my subframe swap for considerably lees. I found a complete car sitting in a yard. The body/interior were rough but the car had a blown engine and trans and had been parked for years because of that. They had no use for it and were happy to have me tow it away, for free! Changed the box to quick ratio, idler arm, 2 ball joints, 2 tie rod ends and it was good to go. Brakes had even been done not long before it was parked so I just threw in new pads to be safe. Fabbed and tacked in everything myself, had a good welder burn it in and it took an alignment perfectly. Total cost under $300
