the masa are what +20mm front correct?
An 18x9 +10 will fit perfect with slight camber or +20 with near 0* camber
the rear is where you will have to do a little work. Just borrow a baseball bat, heat the fender with a heat gun, put the bat between the wheel and the rear fender, and roll the car back and forth...it works like a charm and as long as you heat it, wont mess up your paint
or borrow or buy a fender roller like i did (i bought one, 200USD shipped from the states to me in japan)
I know i whore my pictures alot but
that is an 18x9 -5 offset on stock slightly rolled fenders