Mazdatrix has them. See  http://www.mazdatrix.com/faq/port6.htm   for a nice set of instructions on how to street port a 6-port.  Go to their home page to find the porting templates.  Hope this helps.  Paul Conner

Thanks Paul, because I didn't know who had these.  I also hadn't seen the porting how-to's either.  I did notice that your link doesn't work.  This one should though.

http://www.mazdatrix.com/faq/port6p.htm

Cheers,

Rusty (clouds and sky deleted)