Push-lock fittings are barbed fittings. Much like fuel line fittings are except the barbs are really radical and retain the hose themselves. So really they don't need clamps. Once you push the hose on them it's theoretically locked not supposed to come off. It probably wouldn't either but I just put the clamps on as extra precaution and also to make sure they didn't leak at all. The holes are there in the block and the upper is already tapped but has a plug in it from the factory. The lower hole is the oil output from the oil pump but does need tapped. I used 3/8" pipe size fittings because the I.D. was right at 1/2" which is the I.D. of the oil passages. Didn't want any restriction.
Thanks. Do you see the big bolt in the middle with the fiber washer on it? That's a plug to cap off that hole. If I remember right it's just short a 3/4 fine thread bolt and the fiber washer is an oil plug washer I got out of the parts bin at NAPA. That hole is originally where the bolt retains the filter adapter plate and the filter screws onto. Follow the port from it and you'll see it goes right over to the top fitting which is originally plugged from the factory so all you have to do is take out that plug and install the hose fitting. I could have ran the hose into the large port instead of the other place but it is a much bigger hole and at an odd angle and I would have had to use adapters to mate the 3/8 pipe fitting to it. I thought it alot easier and better looking to use the holes next to each other.