Tony, I was estimating a cost for you regarding a "lower" unit only!
$600 for all (transmission, Intermediate, suspenion fork, Rev Latch, and lower unit) is an excellent deal!
You could use the lower unit (re-shimmed correctly), sell the transmission and Intermediate via e-Bay.
A used transmission (nothing having been done to it) will bring an easy $400. An Intermediate will bring and easy $150. And if you were to remove the suspension fork and rev latch unit......, and sell separately, you may do even better.
Keep all shims for future.
Make certain that each lower unit is accompanied with it's original vertical shaft tapered roller bearing race.
(this race will be installed in the Intermediate.... and must be removed and kept with the corresponding lower unit) It will require a new shim value to be calculated prior to the race being re-installed.
When removing/installing, remove the transmission first/install last. Much easier this way. Cost is two O-rings ONLY!
Rather than type this all out, here is a
link to a web page where I have posted links to many threads that help explain removal/installation, using "heat", and shimming procedure, etc.
It will be "read only" for a non-member, but you will find quite a bit of AQ series info there.
.