I am not familiar with the laws where you live, but if there is a visual inspection, you're going to need to reinstall all the emission pieces you removed. If it just needs to pass the sniffer test, the best you can do is to:
1) Put the stock H-pipe back on.
2) Set the timing at 10 degrees.
3) Tune it up (either with new parts, or clean up the old ones).
4) Set the fuel pressure to 38 psi (w/ the vac disconnected and plugged).
5) Get the engine as hot as you can, without overheating, just prior to the test.
Good luck!
Take care,
~Chris