all motor?

okay so i had been toying witht he idea of turbo chargin my 1992 325is but have decided against it..for now atleast no forced induction for me and if i do eventually go forced induction i have chosen the supercharger route instead...with that said,i want to for the time being just try and pump as much HP out of this car naturally aspirated as i can.this is what i have in mind so far and what i am looking for yet.

FOUND
1.borla catback exhaust system
2.E36 shorty headers
3.tuner motorsports euro underdrive pulley set
4.solid motor and transmission mount kit
5.tuner motorsports conforti performance chip
6.cosmos racing v2r intake

LOOKING FOR
(if you have any suggestions on where to find these and exactly which ones work good,let me know)
1.clutch (would like it for the launching)
2.differential (im unsure if my car came with one or not)
3.bigger throttle body

**ALSO IF ANYONE HAS ANY OTHER IDEAS OR SUGGESTIONS FOR MORE POWER NATURALLY ASPIRATED ON THIS CAR THAT WOULD BE GREAT..THANKS IN ADVANCE EVERYONE**

You might also want a set of cams (which will be obscenly expensive).