To give you a rough idea...
Just dont do it mate, are you trying to go "euro"?
loose the mudflaps.get some coilovers, take the helper springs out and wind them down so it scapes everywhere. then smooth the bumper should look pretty cool then. then maybe more stretched tyres and spacers!
ive got vmaxx coilovers in it and im going to take the mudflaps off and put drop it more and then get 175/50/15 tyres on it
they arent the full way down im putting it down more soon and taking off the mudflapsMy v-maxx went "alot" lower than that and I also had 165 50 15 on my wheels, perfect stretch IMO. As for "euro" it rarely works just make it look clean!