This is probably simple but does anyone know where to get inlets like these? I need my hoses routed straight forward like in the picture.
Yeah, you probably won't find anything like that for 59a style engines... Those are specifically made for that EM setup. Just get a few small elbows with short hoses to the head, then a long hose to the rad...
In the old days we would get a copper elbow from the plumbing dept and use short hose connections to connect to the thermostat housings.