I just found out from Slee that the 2720 springs are 20mm shorter than the 2721s and are for light load. So if you are not going to load up or do not have air bags, this is another option for the BP-51 set up.
Pretty easy to do. I found a YouTube video that steps you through the process. All you need is some wire and a hot glue gun (originally did this for my boat). Eric’s team did the hard work. The whole package works fantastic with a WiFi hotspot. I use the Spark.
Agree with your experience about Ed Martin Toyota and Eric Sarjeant. I drove 10 hours from Virginia to trade my 2008 LC200 on a new 2020 non-HE. Fantastic quality on his mods and install work. Highly recommend him. Also congrats to Eric on selling the 2008 in less than a week.
I bought it from Rhino Radios. They were very helpful with the install and questions. It was difficult going from a 16” screen down to a 9” limited OEM screen :)
Romer has an active install going right now with this same unit.