Limited Late Model Motor - Build Your Own Race Engine, Part Four Photo Gallery
You should use an oil-pump pickup designed to work with the oil pan you are using. A stock pickup, for example, will rarely work with a racing oil pan. The fit to get the pickup to slide into the pump housing will probably be tight. Most pickups have a ridge near the end that you can put a wrench on. Now you can tap the side of the wrench with a hammer to help encourage the pickup into position.