with pieceing it together you basckly customize the kit to your own needs, or your wallet, i beleive your going ka-t
the main issue you have on the ka is turbo clearance with the brake lines or if you do bottom mount the steering colunm
i pieced mine together for the reason that no matter what KITS i saw they all lacked fuel management and proper exhaust alighnment, and none had intercooler piping that ran through oem body holes
i am from south america and down there we have been boosting the s14 since 94 when it arrived and fitting the charge pipe nicely wa always an inconvinience
you can find a decent turbo , injectors and manifold for under 500 bucks, add to that 300 for a front mount and piping, 150 bov, and 100 custom downpipe, another 150 wastegate and last but not least 400 bucks nistune ecu chip......... ta da.... grand total of 1600 bucks, now these are aproximate prices i dont give a fuck if one of you smart asses found a gt35 for 75 bucks....... good for you but reality is that you will not find a perfectly fine gt series turbo for less than 100....
its basicly up to your wallet
if you have 1600-2000 on hand get a kit , it will save time on searching and storing what you buy and waiting and all the ant work
if you dont , get manifold and turbo first and build around that