1969 Firebird “UP” coded four-core radiator trade?

[Paul S.]

I have an original “UP” coded radiator for a 69 Firebird automatic. It’s dated “K” and has the 68-69 tag, original tanks, but missing one side mount. I’m not that familiar with Pontiacs. I have a 69 Camaro BB and would like an original four-core radiator for it. Would the two radiators be somewhat evenly desirable or priced or is one more desirable than the other, assuming that both were in the same condition?
I’d like to offer it up for trade, but would like to ask for opinions first before I would even consider posting. What’s the average worth for this radiator?