CopyKat is correct about the radiator and the clutch fan.
My 86 B2 came with a brass 2 core radiator, I don't know why it had brass.
A friend had an 87 B2 with a single core aluminum radiator and couldn't keep it cool in the spring and fall, let alone the 90+ summer days. He did a lot of looking and found a two core and a 10 bladed clutch fan from an Explorer. His problem was solved.
I'm not saying this will solve your problem. He also lost a couple tenths of a mile per gallon, which equates to a loss of HP.
In the day when we didn't have computer engine management, an engine running hot meant the timing was out of whack or possibly some part of the cooling system was plugged.
The other problem, heaven forbid was a cracked water jacket.
The later is possible on a 2.9, cracked head, but you would be loosing coolant with that problem.
Where I live a 4 core aluminum radiator from a ASY will run about $65, I don't believe you need one, but pulling more air with either a 10 blade clutch fan or an electric from a Taurus will probably be a lot cheaper and more of a problem solver. Pay attention to the above statement about the 10 blade fan and the power loss.
Ray