I was wondering.. if the feed line from the bottle to the nitrous solenoid could be an SS line, why not make the lines from the distribution block to each nozzle also SS?

The benefits is, from all the flexing of daily driving (bumpy roads, etc), they won't break over time. It would be alot easier to install. And it would be easier to take apart whenever you need to.

~Tacoman

The direct port lines have a fairly small inside diameter, available ss-flex lines are usually larger starting at -3an. The direct port hard lines aren't going to break and are much more cost-effective. I can't really think of any advantages of using ss-flex line.

^^^Word. besides, all your other hard lines dont spring leaks and break off when you drive do they? Fuel lines, brake lines, etc.