My set up is pretty much stock besides Z31 300zx ECU & MAF, T3/T04E turbo, with the L28ET, my plans are not really set but as of now i might be using a different L28ET motor from a 81 280zx turbo already rebuild. The motor I have on now was pretty much a test motor but it needs a rebuild it has around 300,000 miles head & piston rings are bad, these motors are delicate to detonation so be carefully not to run too much boost.
I took my pop off valve off, it created a boost leak past 7psi, it pretty much keeps the motor from detonating but if you run it at a save boost level like 8psi you will be fine. I've ran my car at 10psi and it doesn't run good it really needs that intercooler and if your gonna keep that turbo then I suggest to run a small intercooler for less lag.