I bought one of these for my 28 SE, they come with a lot of stuff for what two head and base gaskets cost me mail order from Japan/ISI.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=330098429763
Waitin' on my Magical Racing tail section to arrive, then off to the paint shop. By then, will get my cylinders back on too.