..Ok so for my fuel line i am goin braided return to the original steel pipe....on the in,braided all the way...now when using this stuff its meant to run inside the car as reality it is not MOT legal to run it outside!..Steel pipes are best for this..BUT i need a bigger diameter so need to replace.

Question 1.....although its got to be safer to have a fuel IN the car i still dont like the sound of it Is it ok to go in thru the bulkhead then out the back where the back seat used to be,to the filter?

Question 2.....when upping the braided line size which is needed to extract 600 plus apparently i noticed that although you are having a bigger fuel line,the injector holes stay the same and they appear the same size hole as the original fuel line size?????