Best rear suspension bag for the buck???
 

I have a 94GT with about 270-280 RWP and have problems with launching, as I often get bad wheelhop, and have a tought time getting traction. All around needs help. Also, the *** end kind bounces around too much on multiple bumps. On the highway on smooth roads its stable and it corners pretty good, but it really needs tightening up
Only suspension mods are Springs and Tokico shocks. Wheels are 17X9 255/45 front and 17X10.5 285/40 rear. Car also bottoms out quite a bit with a passenger.

Looking at the Maximum Motorsport packages with Torque arm, Lower control arms and Panhard bar for just around $1000 not including install.
Any better suggestions??
Would prefer not to spend that much if I didn't have to.

COnsidered just getting the MAC rear control arms, but heard they arent that great.

I have heard some good stuff about the Factory 5 stuff I tryed to get it But I did not want to Wait so long I end up getting MAC and to tell you the truth They Worked Good No More wheel Hope But I have had some stuff from MAC be not so hot Like there TB and headers I realy like the Control Arms.....tho If you can get them It took me some time.. But the MM stuff Is very Nice as well I have gotten some stuff from them I plan to get more as well.

Depends on what you want...
I prefer the Griggs t-arm/panhard suspension which you didnt even list.
http://www.griggsracing.com

Thats waht I modeled mine afterh when I built my own:
http://www.dariusrudis.com/mustang/s...es/t-arm06.jpg

Griggs
 

Well I didn't include Griggs b/c, although its good stuff, its too expensive to be considered best bang for the buck. Maximum Motorsports seems to be just as good yet cheaper. Impressive that you custom made your rear torque arm though!