Hi Steve Congratulations on finally buying a trophy and welcome to the forum.
For springs and suspension set up speak to Mark Fish Motorsport springs are great and a knowledgeable helpful bloke.
For exhaust and other nice bits have a look at Pure Motorsport.
I run bremdo hc discs on mine...
Got to love a black car when it is fresh clean and waxed nothing shines like them. Hoolio to help with the hard water worth having a look at a Ultimate Finish Aqua Gleam water filter.
I got mine front fancy plates The website gives you the size think its 90mm x something. Mines been on for over two years and never been pulled and had them fitted on others cars as well no problems.