if you're really serious about making your handling better, you can get legacy gt springs and struts, i also believe there are some coilovers thatll fit. i have a gt spec front and rear strut tower bar, those make a huge difference. in addition to the 19mm sti rsb, i have an underbody brace from r-rev, which has to come off but it really transforms the handling. also tires make the biggest difference. i have kumho ecsta 4x tires(235/55/17) on 17x8" wheels. i have the softer struts since my car is an '11, im kinda wondering if the new struts would give about the same results as my underbrace, i dont know. disconnecting a swaybar can give you improved results, it depends on your driving style, short of autox nationals or frequent lapping and in conjunction with insanely stiff spring rates, id say dont bother, oh, unless you want more wheel articulation when going offroad.