Snara, you've used a 200SX S14 firewall for your LHD conversion. Can you list specific issues you ran into and parts list? Off the top of my head I can only think of a few items.
1. Did all the AC vent plumbing line up behind the dash and are functional?
2. What steering rack did you use?
3. What brake booster/master cylinder are you using for the brakes?
4. What pedal assembly did you use (brake, clutch and throttle)
5. Wiring Harness for the gauge cluster from RHD to LHD, was the RHD cluster harness long enough to move over to LHD? Did you cut and extend wires?