Hi Marc. I have a Lingenfelter Catera. The kit did not include a subframe. It had, a diff, exhaust manifolds, fans, pcm and other electrical stuff. The kit was actually supplied to GM in the US by Opel and consisted of parts they were going to use in their V8 Omega. Lingenfelter bought the kits from GM and sold them on Ebay. Send me an e mail at woodfgwood @aol.com. I believe I have pictures of the parts that were in the kit.