Hasport and Innovative are two big names in engine mounts in the US. Personally I'd go Hasport because I know of their outstanding reputation and quality products.
There are a few companies that make these sort of batteries, try Optima and Deka as well. I recently purchased an Odyssey battery and so far I'm happy with it.
If you want to find out more about Willowbank Raceway and Queensland Raceway go here http://www.willowbank-raceway.com.au and click on the "What's On" section, or here...
LOL I was going to make this point earlier but though better of it, even though there are many people who do not realise the standard suspension is very often a "coilover" setup.
It's just an extra...