Early vs Late SOHC Crankshaft

I’m in the middle of throwing in a rebuilt 3.2 SOHC longblock. Slowly. I work on it 5 minutes at a time. Anyway, I recently came across a thread here where it was mentioned that early and later SOHC crankshafts are not compatible due to the change in ignition types (waste-spark to coil-on-plug). That all makes sense, but how can I tell if the engine I have from Engineworld is the one for my early system (93 Trooper)? Everything has swapped over so far, including the crank sensor. But the valve covers were slightly different, a few different mounting points compared to the ones on the original engine. Is there an indicator I can look for? Did I miss read and any year SOHC block will work? I’d hate to start over, but I’d hate more to get it completely reassembled before learning any bad news.