Welcome to the boards!.
For exhaust mods, it's pretty hard to go past HiTech Mufflers in Darlinghurst Sydney.
As far as I'm aware they sell components if you're not in NSW but if you are they do fantastic work. Worth the extra $$$
Wheels will be hard, but not impossible. The focus has a very unusual stud pattern (5X108 for the LS through to LV) but if you do a search of this forum there's been a few threads about what wheels are out there.
Look forward to see what you do with the car.
__________________
2008 Electric Orange LV XR5. With dreamscience strategem SCT, K&N 57i Gen2 cold air intake for more fun and demonic vaccum cleaner noise!! 
1975 Mitsubishi/Chrysler GC Galant 2-door Hardtop. 4G63 DOHC heart transplant nearly complete!
Check out the build over here
|