I guess this is directed towards you guys who have installed those high hp fuel systems . I'll be pulling together a twin inline fuel system for my TT sbc using 2 x Weldon 1100A inline pumps .a primary and secondary set up .with the plan to have the second pump to come on at a predetermined boost via FAST XFI . How close can you have the pre- filter and the check valve to pump ? in my case , I want to run the pre-filter and check valve right close to pump as shown in picture .