Need Help with Crank no Start

Hello,

I have a 1992 XJ with the 4.0.

So I just changed my power steering pump, water pump, radiator, idler pulley, and belt.

I also did the big 7 upgrade and installed a new JS Alternator 320 amp alternator.

Not sure what went wrong or what happened during this install but the Jeep was running fine other than a power steering leak and wobbly water pump.

Now after getting everything bolted back up, the jeep is cranking strong but will not start. Showing 12.something volts from the battery and all electrics power up when key is on. Fuel pump also primes when key is turned.

Any insight would be great.