DIY intake manifold parts source
 

Found this site when thinking about a custom fuel rail for STI pink injectors.

Ross Machine Racing 410-510-3023 - High Performance Aluminum Fuel Rail and Billet Aluminum Intake Manifolds and Manifold Parts

They have all the pieces to Lincoln Log an intake manifold together for almost any car. Even I could probably do it. Kinda spendy if you buy all the labor-saving bits (four bellmouth runner inlets is the big chunk), but DIY doesn't get much more turn-key than that. If you can weld 6063 aluminum, you're almost done already.

Just what i was looking for..Thanks for the link.
I've been looking for a custom manifold for some time now.

additional resource for intake parts

http://www.xcessivemanufacturing.com...?cid=44&step=2

I know of those guys from my mr2. At the time they made the most popular manifolds on the market. There are quite a few fab shops out there that sell flanges runners tanks ect but not many places that sell miata specific parts