If i am running a 306 with 6 pds. of boost,30 pd injectors,new fuel rails,fuel regulator,braided lines inside the engine bay connecting to stock lines under car and new 255 fuel pump is it needed for me to do braided lines,or is my fuel pressure not gonna be good enough.How much horse power are the lines good till cause i see people running about 450 hp. with stock lines

 

does anyone at all have any knowledge on this that can help me out?

 

YOU CAN USE THE STOCK STUFF for now but when you really go wild most likely the block will let go before needing fuel line upgrade