One of the very weak points is my directional gyro, dated, worn, vacuum operated. The whiskey compass isn’t far behind. I get by fine unless a radar facility is giving vectors, which requires plenty of cross checking. Anyway, I understand the idea of ‘comprehensive’ panel planning, the ‘big picture’. My radios are mostly fine, attitude info pretty good. As with many, trying to keep costs reasonable, since I had extensive engine & airframe work done in recent years. One initial thought is a Garmin 175 paired to a G5 HSI, soft estimate of $15.5k installed. I do not have a panel mounted GPS, do have the Stratus ESG 3i ADS ‘solution’. I get by with my IPad mini & a few flight apps. Can one get a G5 put in for just the slaved HSI features but not for any needle steering? I could about live with that, then possible later upgrade with a panel GPS. I do realize the ‘book solution’ is 2 G5’s paired to a GTN-650, vacuum removed. Just looking at more of the minimalist improvements. Is there a replacement vacuum heading indicator that’s any good? Thanks.