The old HE112 is still on my car at the moment, hasn't been driven for a while as i have to fix a noise which i am pretty sure is the blower rear bearings running dry.
Once the new HTV1900 combo is up & running on the 1UZ i have plans to rebuild the HE112 & fit it to a 265 Hemi in another Centura i have.
I just watch a clip of your Celica at a track day, certianly looks like a handful of fun.