Tough one this. From what i have read of your posts, you do seem to get restless or bored easily, unless you are tinkering with your car. But then you seem very reluctant to spend any decent money on it.
Which is fine, but when there are threads created every other day about R26 conversions, ITB's, Cams, then the car being perfect as is, then Coilovers etc etc, makes me think that maybe this isnt the car for you, and to sell up.
Or possibly try something new with the car, like actually take it on track. Have some fun with it, find its limits, then see if you want to spend some money on it, still find it boring etc etc etc.
Maybe if you do sell, head to jap route, like your friends (Tho when I have had Jap, cheap mods werent forthcoming. But then I am of the opinion buy cheap, buy ****e). This way at least you will have a much broader canvas to work on. As i agree there is very little in the way of mods for these cars.
Good topic of conversation!