Don't take our word for it
http://www.speedtechperformance.com/...rod/prd500.htm
See what Mary had to say.
this Nova has the GT package mentioned above with the addition of the Rack And pinion,
since you have the ATS spindles, (if they are the tall ones) we would swap the standard upper control arms for the high clearance ones and then a 275 will be no problem on a 8,5 or 9" rim. you may loose some turning when the tire touches the frame on the back side.
The biggest advantage of the subframe is the coil over combo and the improved motion ratio, tire clearance. weight, strength, looks, and if your sub is bent or rusted.
we can upgrade to the Chicane weld in coil over set up as well.
http://www.speedtechperformance.com/...prod/prd12.htm