ok so my fuel pump whines like you wouldn't believe. so as such im gonna replace it. so as ive gathered so far one i will be replacing the filler neck boot gasket wtf ever due to it being a problem part on our cars then from there i need me a walbro 255 and an adjustable FPR. or so i gather. question is do i get the Walbro GSS340 which is the high pressure 255 or just the standard 255. i dont ever see me going charged just a full built smog legal ride. also i understand there are issues up to the charcoal canister in the trunk? any insight to get me on track for the swap in a month or two would be awesome.