I would just run it off the head like it's supposed to be. Only way to figure out restrictor size is to add a gauge and check what your psi is at the ofh and turbo at idle,cruise and wot and see what you need for the rating for the 14b. So all that being said just get a line to run like stock 1g's easy as that. Jnz or stm or extreme all sell the proper feed line.

I guess I'll look into that but it's so shiny

Lol how long is it? You might be able to use for the head, you would just need the an fitting or banjo bolt. P/m Justin he might know a size for the 14b if anyone does its him . But he also might tell you the same thing I am .

It's pretty damn long. might snag the stock one of my laser for the time being