c4 c5 suspension

[fuelish]

how different are the two. i have heard that gm doesnt make replacement arms for the c4's and that is the only way to replace the bjs, i have heard that they can be pressed in and out but that weakens the arm. does a c5 have a crossmember that can be detatched from the rest of the car in one piece i want something that wil retain all the angles and dimensions without having to do a lot of checking, im afraid that if i tried to make my own crossmember/framerails that i wouldnt get it right so i basically want it to be the same side to side so i would just have a crossmember to fit properly. i have heard of progressive i have yet to call them for some kind of quote. a c4 would be easy because i can get an entire car from a friend and part out the rest and keep the front suspension. i know c5's have bigger brakes but how is the geometry different can anybody explain basics or point me to some sites with info. oh and if anybodys interested this is going in a 67 mustang fb, a c4 is only 1.5" wider and about 10" shorter

thanx

[Tony@AirRideTech]

Your best bet for accurate info on that is to call Bob up at Progressive.........

[baz67]

Fuelish read this thread https://www.pro-touring.com/forum/showthread.php?t=3294. The Vette stuff is fine with the proper geometry. 1.5" narrower trac will require more spring and/or bar to get it close the the car it came off of. I am not sure how much tire you can get in the front, but that will be a factor as well. 10" shorter wheelbase is huge and will play a role in the overall balance of the car if you use the factory Vette pick-up points.

I am not trying to steer you off of the Vette stuff in a Mustang. I think, if you did that, I could not wait to see it. It would be incredible. I am just pointing out that the whole design needs to be taken into account. If you spend the time to design it correctly, you would have yourself a unique car that would kill em.

Brian