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10. We test-fitted the oil pan, and it bolted right up to the Frontier's engine block, but we found that the oil pickup was way different. Because you have to supply the engine with ample oil for cooling and lubrication, the pickup was modified as well as the internal baffle inside the oil pan, which had to be trimmed to make room for the oil pickup. The factory oil pickup was configured to pull oil from the bottom of a huge oil pan, so it had to be canned, and the Hardbody pickup was slightly modified for our use.