if you have fuel and u have spark, check the compression...assuming you didnt tear into the motor, it should be fine, but check it anyways...then check the timing
there are 4 things you need to run an engine,
1. fuel
2. spark
3. compression
and they all have to come together at the right time
4. timing
if all that is correct, go back and double check everything,
fuel:
are u getting fuel pressure to the injectors (fuel pump good?, fuel filter clogged?)
are u getting the right sensor readings for the tps, maf, cas, o2 , cts
then check your neutral switch/at controller make sure it sending the right signal to the ecu
ignition:
are your spark plugs gapped right
are u getting priliminary/secondary power to your coils (relay burnt out?,transistor fried?)
if your tps,maf,cas,cts, and vss sensor checked out alright, now check your knock sensor<--important
compression test
then,
check timing
hope that helps