front spring Question

I have been running a sway bar on my mustang but everything I have read tells me to trash it so I did
my question is I also have been told I need to go stiffer on the springs and ideas how much I need to to go up been running 550 RF and 500LF 1/2 track

thanks for any help

I run 600lf 650rf no problems. If I were u I would try it like it is first

I use a cut down (12"tall) OEM 4 cyl spring on LF & a 5 X 9.5" 750# (with a 3" spring cup) on RF. And there is no need for a swaybar on a dirt car IMO, Ive never used one.