hello to all. I own a 1964 pa-28-140, ser # 20109 and was researching adding ads/b. I have narrowed my search down to the Appareo Stratus ESG/Stratus 3i combo. best price I could find was from Pacific Coast Avionics. when going to Check Out the price drops to 2695 U.S. THIS IS FOR THE ADS/B in-out unit. and comes with a 5 year warranty . also could not find any negative comments on this product. on the web site of Appareo the Cherokee -140 is not on the list of approved a/c . has any one had this ads/b unit model installed. thank you.