I was just in the classifieds yesterday and found a d16Z6 with a spun bearing and a good tranny for $150. You could snag the it and use the head and the tranny. I dont think the ECU was included but I will try to find it again and post a link. If the ECU wasnt included you would need a P28, which can be had for anywhere from $50 to $100. Then you can find a used turbo kit or build a custom one (provided you have the knowledge and the facilities). This could cost around a $1000 to $2000 depending on the route you take and what kind of deals you can find. Tune it and run around 6-8 psi. You might also want to the throw in a new clutch (like a CM FX300) and flywheel (a 12-13 lbs one). Those two items will run you probably around $600. I would get wear items the clutch and flywheel used, but that is just my own personal preferance. By this time you should be pushing about 190-200 whp and around 150-160 wtq. I can gaurantee that you will be giving most swapped b-series hatches and just about any integra (Type R included) a run for their money (assuming they arent turbo). Ok so quick money tally here:

Z6 Head and Tranny: $150
P28 ECU: $75
Turbo Kit w/ Fuel Management: $1500
Dyno Tune for 2 hours: $200
Clutch and Flywheel: $600
Exhaust (Cat Back): $400
Spare Oil Pan: $20
Little shit I may have forgotten: $200

TOTAL: $3145

Now initially this may seem high, but remember you dont have to shell out all this money at once. You can do it a little at a time as you can afford to get parts. Also keep in mind that to get anywhere near this kind of performance from a b-series swap you will need to swap in a B18C5, which is about $4500. Of course you could always do a B18B swap ($2200) and then turbo ($1500), but you are still more then $3145, and you need the money all at once. I am not trying to say that D-series owns all. But, they are good little engines and way more cost effective for the same or, often times, better performance then your typical swap. If I had the money then I would build a CRX with a B18C5. However, it is not really as practical as just using a built D-series. Oh yeah if you are hell bent on a swap, find a good Z6 engine, trans, and ecu and just go that route. Should be fairly cheap and there are lots of aftermarket internals to choose from along with your usual pelethora of external bolt-ons. Oh wait, scrap all that. I forgot "DOHC kicks ass"