I decided an SR20DET was the best option for me. Low cost, decent power, heaps of upgrade options, good local support to tune, generally a good bang for buck motor.
So I bought a front cut, nearly 4 yrs ago

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The engineer said it should be pretty straight forward to certify if I use the factory computer, turbo and all polution gear. This is the plan, to start with, with plans for an upgrade once going.
The front cut:
Engine out and mounted:

This is mounted over a standard world cup crossmember, with stearing rack at standard height.
I had to modify the sump to get it to sit this low. You can see the bottom of the sump hangs low, it is equal hieght to the bottom of the cross member. I will make up a sump guard just to be sure.

The turbo has just enough clarence over the engine mount. I will trim the mount a bit before getting it powder coated, to allow for a bigger turbo in the future.
I just got the sump back from the aluminium welders, will post some pics later.