Engine and tranny removal advise?

[aeroleague]

Thanks alot for all of the advise on the oil pressure problem and the engine removal.
First ...the engine at this time does not have a oil cooler and does not have a remote oil filter. The guy that built this car told me that it was the only engine he has ever built with low oil pressure. The engine has about 800 miles on it and all the parts are brand new on this engine build. He has already replaced the high volume oil pump with another new unit. He also checked the main bearings but did not check the can bearings. Also he told me to pull the oil pan first(which I'm in the process of) and check the pickup tube clearance to the oil pan and make sure that he installed a gasket on the other end so that the pickup isn't sucking air. As far as what its doing......initially when the motor is cold it runs around 40 psi ( with 50 weight oil) but slowly declines when when it warms up to as low as 15 psi. Sometimes when you are driving along at cruising speed and let of the gas the oil pressure will actually go up rather than go down which doesn't make sense to me. Any other ideas on what can be causing the problem please let me know. My friend that I bought it from has been sick and just didn't feel like troubleshooting it anymore. Ya'll have been very helpfull in helping me with this project and I hope I can return the favor in the future.
Thanks, Mark