Heat shield ah, if u can find a way for that it is good lor... I never use lah. Shouldn't be a problem. Just find a drop in filter with the correct size that can fit.
I would like to ask ur pros out thr..I would like to get a skyline..R34 has been my dream car for past 10years..but it seems hard to get original Gtr cuz all in market is Gtt..i spend nearly 6month...