Yes the T1 pump is a Schadek 99$ USD, as mentioned by CLKWRK.
Its really a cool, compact little system ... pressure side has 32mm dia gears that are 21mm wide, scavenge side has 32mm dia gears that are 26mm long, so the ratio S/P is 1.238.
Oil path is as follows for a T4 application:
From the stock pickup location in the case -> scavenge gears -> out of pump -> remote oil thermostat -> remote oil cooler -> DS Tank, simple enough.
From the DS tank -> pressure gears -> transfer port in pump -> stock oil filter -> block of plate for stock oil cooler (block off plate is modified to let oil pass through as if a cooler was present) - > oil gallies.
This is how I am plumbing my system ... funny thing is the AN fittings/hose cost more than the pump/DS tank
I have a NOS T4 case sitting at home so I can take pics of the ports / case alignment. I'm using the stock T4 cam with rivets so I will have to take out my original T4 pump and take some measurements to get the T1 to fit.
Let me know what pics you need and I will post them here.
Sandeep