Anyone installed a Frantz in a '99 Cadillac STS? The engine bay is super crowded, GM even moved the lead acid battery to under the rear seat. There is a gap between the radiator and front bumper steel rail where the Frantz could fit. The oil pressure sensor is mounted right by the full flow oil filter and a tee could be installed there. Not sure about the return though - to the valve cover cap or drill the (alloy) pan? The valve cover cap is nearby and that's a lot lower risk than drilling the pan. Looks like I talked myself into putting the Frantz by the radiator and tapping into the oil pressure switch location and returning oil to the valve cover. Anyone been down this road with the STS?