6000 is the maximum u can go for legal street use but u will still have to apply permit. Or else if u met some fussy cops, they will give u a yellow sticker for it

One of my mate get a 6000 or 8000 (not sure about it) HID for his 2003 wrx for only 220 bucks fitted wit 1 year warranty, dunt know wat brand is that but is a gd deal i reckon!!