It's A LOT easier to lay with 17's because the tires are slightly smaller. What size are your tires? 205/40/18 would probably be your best bet but they are gonna have a good amount of stretch and I understand that's not for everyone.
Notch, bent pinch welds, no fender liners are some of the major things. You can also shave the subframe where the control arms pivots. TT/R32 spindles and CA's are your next bet if everything I mentioned doesn't work.