I have been been looking at these for some time. Called the other day to get the specs. Before anyone jumps in and tells me to get a 3 core or a Ron Davis unit or etc. Listen and comment. I have has numerous motors on the stock radiator with 0 issues. 355, 355 supercharged. All this with a victor wp. Never an overheating issue. Thing is the factory radiator is almost 30 years old. And has seen better days if you know what I mean. New motor and trans. Nice engine bay. Crap looking radiator. Factory is 1 3/8 single core. The Howe unit is 1 5/8 single core. 1.75 thick total. Conversation with them is that they dont rate their radiators because pump and fan is another component, which makes sense. With the dual fan setup and good pump I was told my hp level would be fine. Main reason Im leaning towards the Howe is its made with to fit into the factory saddles. And will clear my already mounted tran and oil coolers mounted in front of my current stock one which is tad bit smaller. To many horror stories of aftermarket radiators shoe horned into our cars. I know some here have this radiator. Would like first hand exp on these if you do. Thanks