You may need to file out the holes slightly as my bracket didn't line up with the engine holes.
Also watch out for the starter motor as Tony's pic shows. I was unlucky in the fact I had a larger starter motor which meant the electrical connections rested on the engine mount, hence earthed !
I agree, the bracket does look a bit flimsy. I've only found one example of a fail though, check out the link for a photo.
http://www.cobraclub.com/crcforum/user_files/356.jpg
I decided to fit it and worry about it as an when it does fail.
Jon