any pics of what an oil feed adapter looks like on our cars?
 

I'm new to the miata thing, and can't find an extra oil feed port.

What year is your car? An oil feed for the turbo yes?

You may already have it covered;)

If not, this is an oil feed adapter..


http://tunertoys.zoovy.com/product/OTODK

thats what I wanted. thanks.

The port most GReddy users (and me) use is down at the lower rear driver's side of the block. It is not a 1/8BPT thread either, it's 10mm x 1.0 or something like that, straight thread. I have it written down somewhere. I used an easily available Banjo-fitting to go to a #4AN line.

Maybe you could use this type of Honda fitting where the Miata oil pressure sender goes, i never took that out so I don't know what the threads are.

That honda piece linked above would work. The stock oil pressure sender is a 1/8 BST (British Standard Taper). Luckily my escort block has the extra oil feed under the exhaust many so this won't be needed :)

It's 10mm x 1.5, FWIW.