Let me help a bit....
For E36 318's (M42 and M44) there were only ever 2 kits that I know of, One a SuperCharger (belt driven) and one a Turbo Charger (exhaust driven). I am not even going to count the KO Performance "kit". Please look elsewhere, that "kit" isn't worth your time.
The Turbo kit was made by MosselMan and I have personally never seen one or heard of any that had it. It looked like a nice kit, but they don't make it anymore from what I know.
The Supercharger kit was from Downing/Atlanta (DASC) and I personally DO have this kit. It is a wonderful kit and they made very high quality pieces that all fit as they should. The only issues I had was 2 of the small vacuum lines were a bit too short and they started to crack pretty quickly. One trip to AutoZone and $3 later and I had 6 feet of vacuum hose at my disposal.
HOWEVER, Downing/Atlanta MIGHT have a kit or two for your car left. I was told I snagged the last 1994-1995 318 kit, but since you have an M44 they might just have one left. It is pricey at $3499 USD, but it really is worth every penny. The install isn't vey difficult either, you just would need to read the directions slowly and some areas are a little foggy in what you should do. and seeing as I am not going anywhere anytime soon, I and others that have the kit would be able to help clear up some areas.
The other route, a custom build, is something I would not recommend that you attempt, at least, at this point in time. You said you know nothing about Forced Induction setups, so I would do so much reading on the topic (especially on boosting M42/M44 motors) that it makes your brain hurt. I know I searched for countless hours on Turbo systems before I finally decided to go turbo, but then the DASC kit fell into my lap, and I always wanted that.
Hope this helps, but seriously, don't jump into something you know nothing about.