To be fair and honest its rare to find a B16 from a retailer out there that cheap after you include shipping and all that other garbage!
I remember when these engines were a dime a dozen, but now even on ebay they go for about $1300 to $1500. As the scene get more and more popular the prices go up!
Also remember that there are more parts to this swap like Motor Mounts, Shift Linkage and so on to add to the overall price.
Do your homework and ask alot of ???'s
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can try to assist you in any way possible! Check them out!