either cotton filter apexi intake or blitz sus do the same pretty much, the pulsars engine bay is very tight so any filter is going to be prone to heat
i have kept the MINES induction with the skyline which is just a panel filter using the stock induction box
could fit apexis but i thikn the standard box would do better,
GREDDY AirNix KITS are quite good if you want to go for a foam filter, but the hks is terrible