well no probs yet, but i had to upgrade i was already nearly out of fuel running the single GT pump. Modifying the fuel hat to accomodate 2 GT pumps was going to be a task (Reinhart sell one modified for $973.00) and then you need upgrade to a dual FPDM. I went with a return style that they assured me was tried and proven, If I remember correctly the have a Grand Marquis they dropped a 32v in making ~750 at the tire using the same system