Coburns do have a good reputation but my experience was that they do cut corners in the same way that others do. e.g. They didn't refit the metal rail at the front, into which the seal should slide. They just glued the seal in place and discarded the metal rail. Having said that, it seems to work OK.
They also didn't fit the side tensioning wires and when I tried to retro-fit them I found that they don't have the eyelet holes to feed a wire through. Now that the hood has got a bit older it could do with those wires to pull it tight against the windows.
I had my other car hood fitted by Jamie Porter. They had the same approach to the front seal and side wires,plus it came back without the adjusters for the side wires, which I was not happy about! I think (but I'm not sure) that they sourced the hood from ClassicAlfa. I did retrofit the side wires on this one as the hood had the appropriate holes.