99 GT Vert suspension

Im about put some good money into my 99. I wanted to start off with a good drop. I was thinking 1 1/2 in front 2 on back or 1 frnt 1 1/2 on back. This all depends on which will fit with my tires. I currently hace Saleen 18 in. wheels. The front are 18x9 and the rear are 18x10. Heres why Im not sure how low to drop it. I def. want to put 305/30s or 315/30s in the rear. If I can I want BFG DRs 315/30s, but Im not sure if my stock suspension, or a drop of about an inch would allow this. Can someone school me on this. Can I drop it and still ride 315s or will I have to modify it? Thanks

EPIK said:

I recommend H&R supersports for a drop of 1.8 front & 1.6 rear. You could fit 315's or 305's in the rear with no mods whatsoever, but if you are going to drop your car, I suggest a good set of performance shocks /struts (i.e.= bilsteins, tokico's etc.), & some maximum motorsports caster camber plates.

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Thanks for the reply. Does the H&Rs really drop it 1.6 & 1.8? Ive heard some people say some kits dont drop as much as they advertise. So then I shouldnt have a problem?? Ive heard soemthing about IRSs haing problems, but that doesnt apply to my car huh??? Thanks