I know some people who work at KW Automotive, and although they have already made a coilover for the MKIV, they want to know if there are any MKIII owners who would be interested. Here are some links.
KW automotive North America Inc. Suspension -- Coilovers -- Shocks -- Springs
KW automotive North America Inc. Suspension -- Coilovers -- Shocks -- Springs
The ACR Viper was running with a KW suspension.
KW automotive - KW
I told them that I was definitely interested, but they said they need at least 7 more people to want it too. Serious replies!