B20z2 replaced by b20b, crank sensor?

Yo, what’s up everyone , i need you guys knowledge. I’m transferring, alt , intake manifold,
i have a coule ?'s
i would have to swap the oil pump in the b20b to a us oil pump, will there be an engine light ? What other electrical mods to prevent engine light? Should i use my pr4 or the p75 ecu. Stocked not chipped. Non-vtec what’s best ecu to use?. I’l check in awhile…i go eat dinner.thank you