Hi Les,
Not sure if Robert's 5.0 motor will still be legal. As of January 1 this year the rules changed. Any cars that started construction before that date will be OK but he may have to seek a new aproval for his motors after that date.
What a minefield
I spoke to my engineer the other day and he clarified that if you can prove you started building the car before Jan 1 it's OK.
Cheers