I have a Turbo Arrow III and am looking to upgrade the avionics. I am able to obtain a GNS 430W for cheap and looking to do a bunch of upgrades now to save on labor costs. Does anyone know or can estimate (any range will help) for how many hours it will take to install a Stratus ES ADS B and GNS 430W at the same time? How much more time to add an Aspen to the mix if done at the same time. Im just looking for labor time not the cost of acquiring the units. Ive gotten such a large range from a couple of shops and am hoping to see what is realistic. Thanks again.