Moved to Engine Tech & Tuning.

And frankly, you're going to have a hard time finding a complete swap in good condition for under $3K.
Despite the growth of K-series swaps, the B18C still commands a high price.

UPDATE: http://www.hmotorsonline.com/shop/sc...age&item=30008
You'd still need a set of axles, mounts and (depending on the host chassis) the shift linkage... but this one comes close to your price point.