Michael,
I had a spare blower that a guy wanted to fit to his Porsche 911. It all became to hard for him once he realised that the blower didn't physically fit into the rear engine compartment without some significant mods
He had the dimensions before he bought it....
www.capa.com.au is selling the S-Trim for close to what this blower cost to get into the country. I could probably save you a couple of hundred dollars, but you wouldn't get the warranty that Capa would offer through their association with Vortech.
Scott's work number is 07 3208 3224. He'll probably read this anyway....