[tfarhood]

I'm no expert on the Canadian rule or offerings by kit companies, but for a tubular frame (not original) actually better engineered is the Factory Five frame. It is incredibly strong. As for bang for the buck, if you use a donor car, Factory Five is still right up there.

Your best bet may be to buy a second hand finished Cobra. Someone else figured out all the rules and regs and got it done. As for making changes to it if you wish, then you can. I don't think there are too many replicas out there that are ever really finished. Their is always something else to do to it no matter what.