is there going to be any problems with swapping a 97 ls block with a 94 ls block since the block is obd1 if so what do I need?

 

need to add the crank flux sensor that sits around the main crank pulley, but on the inside near the belt. You will also need the Tbelt drive gear from the OBD2 cuz it has teh flux sensor trigger on it.

Other than that, easy stuff.