Speedtech torque arm gives a better ride than Ridetech four link imho....
I can't help you at this point as i'm still in the thinking process myself... but, wanted to tag along to see the replies. I'm pretty sure i'll be going with Ride tech's Complete Coil Over System for my '68 with Tru turn and muscle bar.
I totally agree torque are is better than 4 link.
Suspension choice depends on how you intend use the car. Weekend cruiser with occasional spirited driving, Drag car, Road course or Autocross?
No one system is good for everything and each has their trade offs whether it's stiffer ride, reduced steering radius maybe bump steer.
The best track car is not the best street car.
And budget. You can spend as little as $2500 for Ridetech Streetgrip or Hotchkis TVS or go all out with aftermarket subframes or full chassis for $25k- $30K or more
Tru Turn on has been known to have issues with header fitment. Maybe they've addressed this issue?
Everybody likes coilovers because they think you can adjust ride height. You can but with a relatively narrow range due to shock travel. So if going that way you need to plan carefully. Again, often what the manufacture sells with spring weights and shock lengths doesn't always work right out of the box.
Just about everyone I know has ended returning and switching out the front coils and or shocks to get there desired ride height.
Often overlooked is tire selection which can have a big effect on handling and ride.
Everybody will tell you what they have is best. Lol
If you can try to take rides in cars with different set ups.
Nobody here can tell you what's best for you. They can tell you what they've used and relate their experiences.
A guy brought me a car a while back to help him out with. Had brand new DSE springs, shocks, and sway bar that a "Custom Shop" talked him into installed. No body roll at all. Why? Because it was so stiff and rode like crap. You could put your full weight on the front core support and the front end wouldn't move even a 1/2".