I just got done with my TT swap and I'm in need of a fuel pump. When I look at the sites that sells Walbro fuel pump, those sites don't have Walbro pump for 300ZX. I saw some post at TT.net that recommend me to get Walbro GSS341, but on the sites that sells them, they have something like GSS341-400-857....i don't know what 400 and 857 means, is that for some specific car or any GSS341 255LPH would work for 300ZX? Please help me clarify this if you already installed a Walbro GSS341 on your 300ZX. Thanks a lot guys.