another dumb transmission question
 

is there any significant relation - i.e. mechanically significant - between the transmission and turbo aspiration?

or does this have to do merely with how it is mounted, clearance for other components?
the code on my replacement transmission (to the best of my ability) reads:

UY30106

Clark's Garage says that's for a 944 Turbo 87-88 and my car is normally aspirated. it has been that way for a very very long time. Also I cannot find a "016S" type in the shop manual in front of Volume 2 - any clues there appreciated.

also what I'd really like to know in the end is how to figure out if this is a limited slip differential (LSD) transaxle. from the Clark's table (below), "016S" can be LSD or not...

Transaxle - General Information, Codes, and Gear Ratios

The turbo transaxles are stronger than the NA transaxles and have taller gearing. If you put a turbo transaxle in an NA car, your acceleration will be slower but you might get slightly better highway fuel mileage. Mechanically though, it will bolt up just fine.

According to Clark's, the UY transaxle has an open differential. If you want to know whether someone put an LSD into it (unlikely, but possible) later on, you can spin one of the differential output shafts. If the shaft on the other side spins the opposite way, it's a regular open differential. If the shaft on the other side spins the same way, it's an LSD.

ZV