My friends got a new intake manifold for sale on e-bay. It has a high volume short runner design, made with aluminum. Bolt pattern of the flange is for the D series SOHC engine.

Please have a look: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=012&sspagename=STRK%3AMESE%3AIT&viewitem=&item=220094379446&rd=1&rd=1

Auction has got no reserve. starting bid @ $0.99.