I'm not a fan of the K20 swap, I have a K20 in my RSX, and I wish it was a B-series motor. The K series trannys are garbage.

I honestly don't think the K20 swap is worth the money. B series swaps are much simpler and cost effective. This is because the civic and integra platforms share a lot of common parts.
-PHiZ

 

k20 are stong . your most likely going to need a second car for a long while . k20 take for ever to swap . b seriers all motor can put out just as much as a k20 and save u alot of money in the long run. b motor are also easier to replace compair to the k20 when they blow. it's really a personaly preference on what you want.