And would cost way more. Were talking block, head, if someone doesnt have the capability of doing the engine work then it will need to be installed. Conversion kit, mounts, linkage, axles, ecu. Itll end up costing the same (at minimum) or more, and itll have the same peak power. The sohc will be quieter (NA are loud and annoying), have WAY more torque and be more reliable than a b20 (siamese sleeves) if tuned right. There are arguments either way but if you want to make over 350hp go dohc, but to make ~300 itll be cheaper to do it with a sohc.