I'm not racer but I'm local and have some understanding what you are planning. I think it's much better for you to start with 944 if you want to wheel to wheel racing here in Finland. I have followed past two years Porsche Club racing here and mostly real battle on local club races is in class 8a. That's for min 6,5kg/hv. Typically light weight 944 and cars are quite equal. From this list you can see that there were not many cars running this year:
Tulokset 2010 - Tulokset - Porsche Racing Club Finland
You could consider endurance saloon racing too. That's more popular and you could use same 944 there. Most of the cars are BMWs so it would be nice to have one more Porsche.
I think rules in Finland and Sweden are pretty much same. So you just need to carefully check that your car will fit to rules. I bet what ever you want, you will end up buying it from Sweden. Track ready car you could try to negotiate prices now as it's autumn. You could make good deal. Just remember that it might be bit tricky to get MOT (plates) for highly modified car here in Finland. It might be better to consider trailer too.
There is PRCF annual meeting next Saturday. Same place we have PCF little Xmas party I will be there for sure. If you want to get fresh update and contact names send me email.
On you previous 911 thread there was discussion on track chassis prices. When you import car from US to Finland you have to pay 10% customs and 23% VAT on full price (chassis+freight+paper work). So $3000 will be something close to $7000 ((3000+2000)x1.1x1.23) here. With current exchange rate it's still good option.