cooling system heater hose 455 engine

I have a whole thread about the details so I won't repeat it all here, but I did want to make a quick warning about the Superior Aluminum Radiator that some of the GMC shops sell. I'm sure it's worked out fine for plenty of folks, but mine cost me months of headaches, and hundreds of dollars...

Hello Anyone know what the inside demension of the lower radiator hose is, I believe its 1.50 inches but can't seem to find the actual spec Thank you Stewart