Hi @salman3141
I'm not sure of all the details of which kits/skus are no longer available.
Please feel free to start a new forum post asking about SKU availability and the appropriate folks will respond.
I do know our team is working on improving GPS performance across our entire fleet and are planning on better and more tightly integrated custom designs in the future. I cannot however promise any availability dates but we are aware of some performance inconsistencies and have not ignored it.