I have to agree with most of what's been said. You need to come to terms with the fact that you have no money. That means taking the cheapest and/or most cost effective route
Now, if we assume for the moment that you must absolutely have transport, then you are going to need it fast. That basically throws your project Fazer out the window as it will take too long and cost too much in all of time, parts, tax and insurance.
You don't learn by not doing. I've learnt everything I know by being a cheap bastard because I never had money when I was younger and therefore couldn't afford to buy things new or pay for garages to do the work. So I did it myself, sometimes I had help with particularly large tasks, but for most part its been just me, a manual and the internet. You have done enough work on your Fazer to be competent enough to work on the 106. You may not like the damn thing, but the fact of the matter is that its your only real lifeline.
Neither a head gasket or CV Joint requires any super expensive specialist tools and the parts are quite cheap for small French cars. Hell, the entire new driveshaft just to replace the ABS ring on my car cost only £65 fitted and its in a whole different league to your box on wheels.
The only other feasible option in my opinion is what noggy suggested, which is to buy another cheap second hand car just to drive until it dies. The most expensive car I've purchased, ever, was £500. Granted it wasn't the most sensible option as it was 24 years old and rather expensive to insure, BUT that is beside the point.
Failing these two options, you refuse to take the help from your parents and decide to get project Fazer back on the road. What exactly is the harm in them cutting you off? I'm sorry but in my opinion once you're over 18 you should learn to fend for yourself and how to make sensible financial decisions. University is a generally a stage of life where you have very very little money and I'm pretty sure you are investing a lot more than most other students in to running a vehicle.
-----
You've just posted so I'll comment on one or two things additionally;
Currently, I have just under £200 of spending money per month that isn't tied up in fue, rent or food. All other expenses come from that: clothes, spare parts for the car, beer if I go down the pub. Part of the reason Project Fazer is taking so long is because I have to budget every expense very, very carefully, getting the best deals I can off ebay etc.
If you don't have money for food, you certainly don't have money for beer. If you have £200 of spending money per month, then you have more than I do as I frequently spend more than I earn which has become a slight issue with Credit Cards, which I have thankfully gotten under control.
Not when I need said vehicle to commute, and when I have no proper tools! Give me a workshop, a manual, and plenty of time, and I could probably muddle my way through it. I have none of those here. All the serious engineering on the bike (swingarm and eexhausts) is planned to be done by a professional fabricator.
This goes back to my point above; if you want to have the swingarm and exhaust done professionally it is going to cost a very large amount of money and time to complete this project. In the meantime you will have no form of transport - this seems completely illogical.
-----
Edit: Figured I should add that I mean no offence, it's just tough love.