There's no real difference in size, the boards I use have an extra cap per rail and there's space for correct c-rc snubbers of the transformer secondaries. A small but worthwhile improvement.
Holler if you need any help with the build.
Thank you Simon , can you PM me price for your PSU boards.
Paradise boards bought&paid , should be in the post today.
It seems like perfect project, I spend a lot of time in hotels, I can do all transistor testing away from home then.
I start looking slowly into buying all parts, question to Simon , do you have list/do you remember suppliers/make off most critical parts
Many thanks
Slav