[ProdigyCustoms]

I spend all day talking to people about this very subject. People wanting the best, feeling pressured to HAVE to do a aftermarket subframe, or go to welding school modding their subframe. As someone mentioned earlier in the post. Once you change control arms and improve camber gain and caster and install a good steering box. You enter the land of diminishing returns.

For a street car that raises a little hell on the street, is casually autocrossed, goes to a couple track days and runs 8/10ths. The difference in performance of a Mildly modded (G mod, A arm, 600 Box, etc) VS Very heavily modded subframe (Coil over conversion, fully welded) or even high end aftermarket subframe, is at such a high 10 / 10ths edge, most uf us will never find that edge and find the performance advantage if any.

Most of us spend 100s of hours and THOUSANDS of dollars on paint and simply will not push the car 10 / 10ths, or worse, 11 / 10ths anyway. So we will never realize any performance difference even if there is one. the perfect example was at the midwest Muscle Car Challenge this past weekend. Over 40 cars were there and 5 were "racing" for the win. the others wewre all having fun pushing there car about 8 / 10ths. I know I was there with the Bull Run Racer and it has a 4000 mile Rally (Bull Run 2010) to do in 5 weeks, and I was not really interested in wading it up. So I ran 8 seconds off the winning pace and had a ball! 90% of the other guys felt the same way.

If you do...........

Upper and lower geomtry corrected arms, I would do 1 piece arms. (I do not like light weight anything on a street car)
A good coil spring and seprate shock
Good hollow sway bar
600 Steering box
Some tie rod sleeves and new tie rods / idler.
Redrill upper arms mounting holes

Your going to make a amazing difference you can really feel.

IF, Big I F, you can do your own cutting and welding and IF you enjoy the fabrication, the coil over conversion would be cool, but I promise the advantages are small if any. And it takes a experianced racer to be able to read the feedback to make the ajustments needed to make it better.

If you have to pay a shop to do the coil over conversion kit, your going to spend way more money then it is worth.