I've got one of those mushroom airfilters lying around too if you want it cheap. Find me a price on the net for a second hand one and I'll try to beat it if you're interested. Its the same type, HKS mushroom filter. Can't help with the AFM or piping though.
You're a right little bargain hunter you are, get yourself onto the antiques roadshow or something
Only 1 problem atm - your car is looking too high!