I have TCP subframe connectors with the TCP x-brace. The car feels very solid and I haven't noticed any creaking from the body when I hit bumps in the road so I'm sure it is doing some good. I haven't tried driving the car without it since I haven't really ever felt like removing it and going on a drive for comparison.

 

Save your money. You don't say what year your car is (another of my pet peeves about signatures), but if it's a '65-67 install BOTH front torque boxes and convertible inner rockers. That will do more for chassis stiffness than an X-brace OR subframe connectors.

 

is installing torque boxes easier than putting subframe connectors? i know you weld them.

 

Sorry, it's a 68 fastback.

 

No need to apologize for it being a '68.....even if '66's are much better looking... :yoho:

The solid roof, wide sail panels, and deep floor provide an extremely rigid structure for resisting stresses of up and down and side-to-side motion. Where the weak point is, is torsional (twisting) motion which subframe connectors and x-frame doing do diddly squat to prevent. Short of a full cage there isn't a ton of things you can do, other than maybe a convertible seat pan. If you have less than 400hp going to the rear wheels are aren't running wide slicks I wouldn't worry anyway.

 

I have installed 2 sets of sub frame connectors and LOVED them......

 

I made my own connectors and used a TCP X-brace to connect them. Basically because I liked the idea of the X-brace more than anything. I also installed an 8 point roll cage so even if the x-brace did anything particularly helpful, the cage probably overrode it. My roll cage is also in my car just because I wanted them and no other really good reason. It did stiffen the heck out of the chassis though.

 

My roll cage is also in my car just because I wanted them and no other really good reason.

Interesting decision.

 

All chassis stiffening is good chassis stiffening...

(btw, I'm running that particular Meier piece on a '70 convertible - it does make a difference.)

 

Thanks for the replies.
Car is mostly street car, does make 500 plus rwhp, and does see slicks at the drag strip.
Think i will try the x brace, as roll bar just doesn't work for me.

 

It's nice to see support for our connector kits here. A pair of welded in subframe connectors and a bolt-in x-brace or center support will make a significant difference in the torsional rigidity of your Mustang. This will improve it's life expectancy in addition to providing a noticeable improvement in handling, even on a street car. It will make more of a difference than adding floor or rocker pieces from a convertible and will be easier to install. Adding the extra torque boxes definitely wouldn't hurt.

A roll bar will do even more and we encourage their installation; we like it when people are safe. However, we know that's not an option for every car.

These cars aren't necessarily 'flimsy' but I would venture a guess that the Focus has a more rigid chassis structure.