no oil pressure

Well I got it home i pulled the oil pan this morning and put the oil pump down in the pan with oil in it.
spun it over with a drill and oil went everywhere . Called the builder and told him I was shipping it back. Tried to get them to just pay for a local garage to fix it and save me a lot of work. They said no to send it back on their dime. so I guess ill pull it out Monday and ship it back. Ive still got the crate they shipped it here on. I may pull the valve covers and check the lifters.