Hopefully you have a Saginaw pump. Others are often inadequate for pressure and flow. Some Saginaws were fitted with metric threads. The 1" hex pressure fitting can be swapped from pump to pump to get the right metric/standard fittings.
Really, the easiest setup for you would be to send the kit back for a refund and buy the kit from BAC. Seriously. If you have a lot of experience doing semi-custom stuff, going the cheap route by piecing stuff together often works. When you're doing something new for the first time, it is wise to follow the easiest methods already figured out by others.
You can do this but it takes more work on your end. You'd need to find a hydraulic shop...maybe one that makes hoses and lines for tractors or other heavy equipment. Take the steering box and stock power steering hoses to them to assess thread size and ask for an adapter to connect the two.
Again, it can be done on the cheap but what is your time worth? How about the frustration? I did the swap and did a couple other things at the same time. With the Bergman kit, this can be done in one day easily. With an incomplete kit from Summit racing, you're cutting the steering column....making the column essentially useless for any other steering box that you may one day want to try. You need to find the hydraulic fittings and you get more vibrations through the steering wheel.
Was the cost savings worth all of that?
