I just checked ebay again and it looks like you probably got the Denso replacement, which is why your fans don't fit. This auction currently going looks exactly like the one you purchased (price and seller) but now it specifies that it's for integras with Denso's.

http://cgi.ebay.com/ebaymotors/ACURA...QQcmdZViewItem

The one for the Showa's is like $30 more.