Dude, always look at the bigger picture man. What if you crash your car and you need a set of new headlamps. How about a stone smashes your front windscreen? Lets face it, a 5 year old car is bound to have some problems. Say your stabiliser bar, drive shaft, axle and etc. This kinda items are bound to spoil if you're unlucky. If you're talking about half cuts, you maybe able to wait while you order it. That is if you're willing to wait 3-5 months and probably pay 20K for a 1.8 litre Will half cut.
If nothing goes wrong, i'm sure you're the talk of the town by driving one of the rarest car in town. Its nice to be looked at. However, you'll have lots of headaches when searching for parts when something goes wrong.