Raj,
The photos that Harrop shows of the HTV2300 FDFI is actually the HTV1900 FDFI, because here is the brochure
http://www.harrop.com.au/pdf/HARROP_...PERCHARGER.pdf
It will still be tight, but you would only save the rear pulley setup. The design is similar to the LS9 supercharger, which uses gears in the back. There is photo of the front of the HTV2300 FDFI on facebook, but no back photo. The other problem is Casey making a pulley setup for the DSE subframe and the Harrop. I was told by the engine builder, that they had a 69 Camaro with DSE subframe in Detroit to mock up the harrop, so to check for fit with the Harrop in 2008.
Jeff