Right now there's only 1 nav and 1 comm. We can do localizer and VOR approaches but no ILS which means I can't use it for the dual IFR trip or for the checkride. I would like to install this: http://www.valavionics.com/ins-429.html The manufacturer provides this nice FAQ: http://www.valavionics.com/installation-in-type-certificated-aircraft.html If this won't work, what cheap (relatively) equipment can I get to get a glideslope? I'm guessing it would need an STC. The VAL INS 429 doesn't appear to have an STC for a 150, so it would need a field approval and would be a giant pain, even if it got approved (which there's no guarantee). A GTN 650 would be nice, but cost prohibitive and overkill for training/giving my 150 IFR capability. The airplane has a clock, and all the other equipment in 91.205 so it's technically equipped for IFR, but I want to be able to shoot precision approaches.