There's a few aluminum ones on ebay too, that have caught my eye. I'm pretty sure the one I run has the thinner core.. but it runs cool. I saw it touch 210 at Moparty after some hard runs.
I would have expected the Pursuit cars to have the thicker one. But just a guess.
How many fans?
One thing I have to figure out is the fill cap. I like the idea of keeping the cap on the radiator but there are no options to do so with the LX radiator. You added a cap in the radiator hose, which is an option, or maybe an expansion tank like the stock setup in the LX/LC cars. Not sure which way I will go yet.