i finally pulled the upper manifold off to get a real look at the fuel rails and they are different than they appeared with the manifold in place. looks like its a corvette manifold from the part number. no worries. this will work just fine for me

 

An6 is 3/8 sufficient fir pressure side and fine for return. Are you looking at converting the hardline to an6 with male saginaw at rail ?

 

yes. the hardlines were missing on my setup. im also using a different pressure regulator so the factory press in tubes arent going to work. i need to see what size the cross over holes are to get my fittings correct.

 

If interested I have this for sale or I think I might have one tapped npt but im
mot sure what size to tap the crossovers are 3/8 it might be 1/4npt to an6.

 

 

 

Looks like these could be 1/4 and 3 3/8 npt to barb

 

mine is currently set up like this. i thought it might be factory. i bought the manifold second hand. i didnt want to use rubber hose and clamps for the cross overs. i am planning to use an fittings and the braided line. so -6an is about 3/8. what about -8an?

 

-8an is 1/2