Actually Alaskan, you could probably pick up a Navworx 600B (with ARINC429) really cheap, and it would display IN traffic on your 530W, as well as on tablets, etc. Any cheap transponder would work with the unit too as long as the Navworx came with a TransMon. Of course you would utilize the 530W as the position source, therefore complying with the AD using the AMOC. The unit is easy to install or your A&P can do it (but it would require an IA signoff). I bet you could be 2020 compliant for less than $300 if you find someone that can no longer use their 600B and is willing to sell it. Post as a "Looking For" or WTB and see what happens. I had that setup in my Cardinal (with a 430W) and it worked wonderfully.