Has anyone fitted one of these kits and does anyone know how much extra offset you get from the original drum brakes?

I fitted the same type of kit from an US mob, with exception of drop spindles. The kit I had, made the offset and extra 0.5" on either side. I also bought an 2" narrow beam so it worked out with the brake kit that I decreased mine by 0.5" on each side.

Hope this helps, Kevin.

Cheers for the reply
Just trying to work out how much of a narrow beam im going to need as I want the front wheels sitting about 2" inside the guards. At the moment the wheels are sitting about 1/4" inside running an adjustable beam with standard drums and 5 bolt Empi polished five spokes.
The set up I want is Classic vee dub dropped spindals with the 5 bolt disc kit for a link pin adjustable beam.
George has told me that the disc and spindal kit will increase offset but was a little vague on the extent?
Looking at either a 3" or 4" narrowed beam?