G’day Jared,
”Welcome” to the forum! Cool looking RX you have there.
And yes, if it’s got the dual range awd box, this is the only AWD gearbox Subaru produced with a locking centre diff
Look after that centre diff, they wear out easy if you don’t run tyres of the same make, model and mileage. As soon as you hit anything that’s a loose surface, lock the diff! You don’t want to be spinning wheels with this box.
One trick I’ve heard with maintaining these EA82t engines is to put a small radiator, such as a motorbike radiator, in the turbo coolant return line. The idea behind this is to waste some heat from the returning coolant before it goes back to the engine then to the radiator. I’ve seen this done on two EA82t converted L series over here.
Cheers
Bennie