professional products fuel rails?

I just ordered a set of profession product fuel rails, But i don't know what I.D. size they are to order the right fittings... They are advertised to be larger so im guessing 1/2"

I know cartech uses 5/8 ID (3/8 ntp) on theirs and vortech uses 1/2" ID... Does anybody know for sure what size P.P. uses?

I know P.P. has a rep of having quality control problems but surely they can't mess these up right?

For new fuel rails, all the fittings, auromotive bypass regulator, and braded line it cost me a little less then 350$.

Whats sad is i got the complete list from cartech and they want 470$ for the kit,
but i found these PP fuel rails for 72 dollars shipped (5.0restro), and a new regulator for 100 bucks to help save on cost.

If you have 1/2 I.D. what would the ntp be on that approx?

http://www.cartech.net/instrcfuelrailkit.htm

here is a list of all the plumbing needed... Its about 150 bucks through jegs... Everything should be right except for possibly the fittings for the fuel rail itself due to it possibly being another size.

Oh and the fittings for the bypass regulator are for the Aeromotive with the two -10 AN fittings...