What AN aluminum coupler adapter fits late m44 fuel rail?
 

Hi Guys, I'm thinking of complying the an aluminum coupler on the return port of the late m44 fuel rail, external fuel pressure regulator type, as the ebay listing here below http://cgi.ebay.co.uk/ws/eBayISAPI.d...ht_1567wt_1137

http://i.ebayimg.com/21/!Bckcu)QBGk~...iuJzw~~_12.JPG

But, unfortunately, they don't have exactly kit for m44. According to my search, there are 2 types of the AN adapter, M and npt screw type. I am not sure which one and what size that gonna fit late m44 fuel rail though?

Here the link for M straight adaptor: http://stores.ebay.com/autofittings/..._sid=563989697

npt straight adaptor: http://stores.ebay.com/autofittings/...3989697&_rdc=1

Any idea?

Thanx a lot in adv,
-George