I'm going through the same thing right now with mine. I've found that Gaz shocks makes a coil over kit in the UK. I'm trying to add air suspension and hoping for a bolt on kit. Shawn at ejudged.com who has a 2014 bagged TC that he did for the SEMA show said he went through Airlift and was sent front struts from a Mazda3 kit that were direct bolt on and universal bags for the rear. He told me to contact Corey Rosser at Airlift who worked on his application. I sent an email yesterday and waiting for a response on the specifics. Also check out Vanstyle.co.uk.