So I call my local Caddy dealer Allen GMC Cadillac in Laguna Niguel (where I bought my '05 V 5 months ago), and ask if he can install the UUC shifter I just bought from James at Lindsay Cadillac. The "service advisor" tells me he's never heard of it; calls his manager, gets back to me: "We've never installed one, and can't install anything we don't sell you for warranty reasons". I ask: "how about a Corsa exhaust system"? (there are 5 for sale on Ebay for $999); he replies: "we can do it for $1895, but I'll discount to you for $1695." The way I see it, that means I'll be paying $700 for installation that way, so, my search for an installer goes on...