Need suspension help!

[2000 Mustang G-Tee]

Hey guys....it's been a while since i've posted here and last i posted it really helped so im gonna try again....
the problem now is that im looking for a ultimate suspension package for my convert. 83 GT.....i already have a 6 point roll cage in there but i need everything else that goes with that cuz right now its set-up for dragin and its a ******* boat in the water going over 80 mph.....i was looking at the Griggs Racing Gr-40 autocross package.....looks good to me but any other options or suugestions would be very helpful...thanks
And is there anyway to get these cars to outhandle these damn euros at all?

Jose

'83GT/ 306 w/ Windsor Jr. alum. hds./ JE frgd.pstns./ JBA full length hdrs./ MAC 2.5" off-road h-pipe w/ 2-chamber Flows/ Hurst short throw shftr./ MSD ign./ 4.10s/

Best 1/4mile ET
12.65 @ 111...