bleedin blue, i bet you'll be fine with the summit control arms. I got my car back and the pinion angle is perfect, the guy at my shop must have been looking at it on the frame lift. not going there again. also, summit racing tech was also completely wrong. my rear is fine, and nice and tight (compared to stock anyway). i would recommend these arms for the price.

 

The lowers look to be about 17 3/4 inches from bolt to bolt (Again from the centers)

And that is a relief!

 

i WOULD NOT put the summit ca on your car. i put them on my 02 gt and it threw everythingin my rear off so bad it caused my eaton diff to bind and start to lockup the only way i had to fix it was put the stock cas on and get a new diff. (thankfully the eaton was under warranty)