Here is an example of a project Peter was involved with. The following explanation from Norm Holloway gives the background :

"Thought you might like to see the 'finished product'. Bruce Ellwood originally commissioned the alloy body which was based on the Ferarri 500 F2 car. John Hearne bought the project but was unhappy with the Alfa 105 series running gear which he considered to be 'out of period'. He aquired a couple of derelict Alfa 1900 doner cars and had Peter Bruin design and build a 'period' chassis. this included changing to transverse leaf springing and building up a De Dion rear end. Graeme Brayshaw sorted the engine (his workmanship was complimented on by the English tuners). Sadly for us, the car is now domiciled in the UK where John hopes to run it in hillclimbs. He has already been told that it will be accepted at both Shelsey Walsh and Prescott."