The BPt is an expensive swap to do. I have not done it myself, but I have read, and heard that it can easily run you 4000$ in the end to get everything going. Go to http://www.mx-3.com and browse those forums. TONS of handy info.
The info is all out there in quite a few places if you do the research.
I would go the KLZE route...Bragging rights.
If you get the KL, you can get it up to 250 or so naturally aspirated. Then you can take out most turbo cars, then hold the fact that your car isn't turbo against them....That's what I'm gonna do for a while.
then, later, if you want more power....as all of us do, HEHEHE!....then you can fork over some bucks and bolt a turbo on!