At my local gliding club, we just started last week to convert a wrecked ASW-15 fuselage into a simulator, for use in training as well as exposing people to the sport.
Attached is a photo of what it looked like the other night after we cut off the tail. Last night we removed the Tost hooks (those are still worth good money), and broke out the bulkhead at the back so we could remove the control rods. This will allow space for the computer to go (and speakers if we need them).
I've been struggling with what screen to buy (we'll go multi-screen later). At first I wanted to get a 32" or larger TV screen and mount it on top of the fuselage line (outside the cockpit). But then I realized that this would put the simulated horizon too high, and this will possibly mess with students when they go fly for real.
Still under consideration, but for now good progress!