Since you have a 2JZ-GE bottom end & a 1JZ-GTE top end put the two together make a 1.5JZ buy an exhaust manifold & turbo kit off ebay for a 1JZ pretty cheap.
use the 2JZ-GE harnes if the NA-T forum guys know of a standalone that plugs into it.
If not buy a 2JZ-GTE harness that plugs into a stand alone, or if your comfortable with wiring just get a decent stand alone with the complete field harness & wire the whole thing in.
Find a Base 2JZGTE fuel injection map program the stand alone with a 2JZGTE base map.
find an ignitor to deliver fire to your cop.
Tune & drive...
Normaly I dont recomend starting off with a 1.5JZ but since you have all the parts & maybe the time & money:dunno: why not ?