Doesn't the whole MK3 subframe bolt right onto the MK2 body?
I'm working on the same project.
Starting withe the 020 trany
until I have the engine running good,
then focus on installing the 02J trany and shift box from a MK3 TDI..
I'm not sure whether it bolts in.
I had forgot that im running on temporary summer wheels...for 6 years.
Here's a test fiting of some Borbet R's i got a good deal on.
Hope you saved enough coin to be able to afford some tires on those rims. Could be a bit of stiff ride otherwise.
These rims will receive 185/55 tires from the current ones which can be seen in pics earlier in the thread