The B18FT is a much more realiable and better built engine plus it has the bonus of having fuel injection.
To get them around the 200bhp mark it doesn't take too much to do, a case of bolting on some new items of other cars and then setting it up to make sure it fuels right. The basics will be a different camshaft (one from a Clio RSI works), T28 off 200SX, some Volvo T5 orange injectors, nice free flowing exhaust and better intercooler, de-limited ecu and your be getting close to the 200bhp with a it of boost too.
To explain how the carb work will take an age, there's alot to write and also how to tune them does take while to explain too. The knack is drilling or reducing the size of the right jets and not just increase the size of the main jet, it would take alittle while to do as you'll have to keep taking car for drive to see how it fuels and then mod it again.
I've been doing carbs for pretty much 10yrs mate and they finally have done my nut in, for me fuel injection is only way