You mentioned Rearsby, where the Austers were built. Yes, I had made a scenery model (also at Britsim)

Regarding the windscreen opacity, you don't mention which sim you're using. All these models were built for FS2004, not FSX. However, I did include a windscreen texture specifically for FSX with each model which should help. The airfield scenery model won't work in FSX.
HTH
Cheers

Dave M(oly)