Soon I plan to order a set of Glowshift tinted series gauges. I prefer the look and visibility of analog gauges to digital and these seem to fit the bill nicely even if they seem to have sending unit issues. I will be getting a coolant temp, trans temp, oil temp and oil pressure and mounting them over the mirror. The trans temp will be installed into an inline Derale filter kit and the coolant into an autometer heater hose tap. The oil gauges are what I need a suggestion on. The only two options I've seen are 1) an adaptor and tee on the plug on oil filter housing or 2) a sandwich plate on the filter, just don't know which one I'd need. I'm thinking option 1 could goes issues with either leaks, clearance, or accuracy running too many adaptors. What have you done, or suggest?