hey every1, i did a search, found nothing on comparisons. i got a 3k and i just purchased a complete 4ke injection setup, my 3k has a 2.5" exhaust and extractors, and the bigport head, i was thinking about getting a new cam, and putting the 4ke setup on, but i was thinking why not get a 4k and do the same, with this sort of setup will i see that much more power from the 4k compared to the 3k?