97 ex with sohc v-tech zc won't run

I recently swapped my motor in for a sohc-v-tech zc, the car was running. Then I had a over heating problem, fixed that on the test drive the car died and would not start again. we replaced the main fuel relay, the crankshaft speed sensor, the car has spark and fuel. I also still have the obd2 ecu but was told that the 97-97 sohc zc's were obd2. Any suggestions appreciated

**v-tec**
sounds like somthing is not pugged in.

**VTEC**

and if you're getting spark and fuel I really don't know what the hell could be wrong with it.

I'm guessing it cranks and everything just won't completely turnover?

zc's are obd1 arent they..

There are ZC in the later integras over in Japan, even a 4wd (maybe awd) version.