In order to accomidate my new GIGANTIC radiator (howe dual pass) 19 5/8" x 27 1/4" I need to scoot my oil cooler lines over a touch, however the stock lines are too short for this. I was going to make up new lines anyway as I'm also making up the fuel line too. My question is what fittings will I need at the block and at the cooler? Thanks guys.

 

Since you say you're making your own line, are you using SS braided hose with AN style fittings?

If so, Racing Beat and Mazdatrix both sell the adapters you would need.

http://www.mazdatrix.com/b6.htm

If you buy their hose you need a 16mm to -10 fitting for the front cover and an 18mm to -10 for the rear cover.

Note they say you need more adapters (16mm to -10) if you are making your own lines.