At TESLIVE, the Plug In America booth was right next to Fat Cat Motorsports from Redwood City, California. I'm not in the market for suspension upgrades, but I talked with Shaikh for a while and was impressed with his desire to build high-quality, well-rounded, long-lasting products. He seems like a really easy guy to work with. (The downside may be price; I don't know, we didn't talk about it). He seemed genuinely interested in the EV market. They were a last-minute addition to the TESLIVE exhibitor's tent. I believe they had done a little Roadster work, but had not yet done anything with a Model S. They got a lot of interest at TESLIVE, and would like to get started. But first, they need to borrow a Model S for a few hours to take some measurements. They would be willing to provide some incentive (I don't know what). But this seems like a chance to influence what they build and make sure it meets your needs. You can contact them on their Facebook page (link above) or PM me and I can send you a phone number and email address.