I don't what the stock set ups on these cars may be, but on a FWD car a rear ARB is a necessity for good handling and corner exit grip at the inside front wheel, if not you'll have too much understeer and easily spin the IF. Strut bars are good, you ought to get a rear one as well since the rear of the chassis is likely less rigid than the front is. Only use good quality strut bars with robust attachment brackets, many strut bar attachment brackets are too weak and allow flex, defeating the purpose of the bar.