^^^^^I'm doing the same thing. I have a return regulated to put on after Scheid and then puting 190's in it this fall. When I put on my 150/180 I didn't notice anything different and don't expect to until I get the injectors in. As far as the pick up tube goes, I don't think you have a choice but to put a new one in. The size of the pick up from FASS is fricken huge compared to stock. I woul imagine you would hurt the FASS if you still tried to run the stock pick up tube. Dropping the tank on my install was the most time consuming part of the whole thing. If I ever have to work on the tank again, I am just going to pull the bed.