Dont need bumpers - and I well known NSW CR guy had his car ready for engineering in 3 months....he's built it 2 more times since though! Are you getting one of the new CR chassis?
Also if looking for a engine box consider new. There are terrific deals around on L76\L98\LS2 engines and T56's. There isnt a swag of older commodore owners transplanting in these 6lt engine for nothing. L76+cam = 300kw+ at the wheels.
Do fords come in beige?