Video has pretty much all the information:
Porsche 944 manual steering rack for sale (sport option) - YouTube
I will add that there is a bolt you can turn to dial out all play in the steering. I took apart the mechanism and re-lubed it (as I thought it took too much force to turn the pinion shaft) but ended up putting it back to how it was configured. It's a spring-tensioner mechanism, and works perfectly. However, I noted that taking it down to practically no play increases the force needed to turn the pinion shaft by a significant amount. Not so much much that steering would be stressful, but you'll feel it.
$275 OBO