Cranks but will not turn over, no spark no fuel

So I did an engine swap and and everything else including dash everything was working fine before the swap. It is now in a econovan. Have checked relays, ECU, spark plugs fuel pump and pressure fuses battery. Any ideas I can check next? It's like there is no power but it turns on cranks but wont a start. Could it be wiring somewhere? Also has had a manual conversion. But note it was working before the engine swap. Any help or ideas? Thanks