Do you have Vulcan 1\2" or 3\8" big line kit? If your running the 1\2" kit most all of it will be useless because the Glacier kit is 3\8". If your running the 3\8" B\L kit you may be able to utilize some of it. You have to add a bypass kit though. I believe Eric (Vulcan) has come out with another fuel system comparable to the Glacier Walbro system. You should PM him to get some info.
I'm currently running the Glacier\Walbro system & loving it! Lots of choices & prices. Do some research & choose whats right for you.
Clay