I couldnt find the answer to this, I know the ls2 intake and nnbs 5.3 intakes are the "same", but are the fuel rails also the same, ie, I could use LS2 specific fuel rails on a NNBS intake?

 

The factory rails obviously wouldn't interchange because the crossover pipe is too short but an aftermarket set may work depending on how the fuel crossover is designed. Are you refering to a specific set of rails?

My statement is in reference to LS2 car rails VS NNBS truck rails. Maybe you meant the TBSS rails? TBSS and NNBS rails are the same part # if that helps.

 

I have aftermarket rails for an "LS2", I want to make sure they will work for a NNBS or TBSS intake. The crossover is an AN hose at the front of the rails, so that shouldnt be an issue.