Dry Sump must only be considered if you plan to run very high revving motor. Usually on an All Motor N/A 4A-GE designed to make power above 7000RPM and expect to rev all the way to 12,000 or even 13,000RPM. 4A-GE stock oil pump are known to lose efficiency above 8000RPM and may even shatter to pieces on prolonged sustained high revving