Alan,
The Goose sounds quite impressive. Id recommend sourcing a decent thermostat and piping, not sure what the Muz kit is like but the SZR always ran very cold. I ended up blocking half the rad off to and then it only ran luke warm.
As for the SRX I decided that rebuilding the seized engine was going to be to time consumming so Ive decided to re-use the original engine, which is ok but has a small oil leak from the base gasket. This way I might actually get to ride the bike !.
Ive decided on a paint scheme and hopefully found someone to paint it all. Just need to sort a rear disc and put it all back together.