2G Auxiliary radiator?

[Hickory-NC-2Ggsx]

So as everyone knows it's hard to keep ac and a fmic with a stock appearing car in 100° weather. Meaning no vented hood and no added vents in the bumper. I came across some info on the 15+ vw golf R. They have a auxiliary radiator off to the side like where our stock ic is. Mishimoto makes a upgraded dual pass unit. The size seems about perfect to stuff one in there. I think it would be a good help to the system. But I would like to see what others think on this. And how to possibly plumb this in to our cooling system.

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[FIBA M - EC17PSE]

3 ways off the top of my head, simple and complicated methods.

Simple, (ish) once its passed through the main radiator it then goes into this as a last efford for cooling. It has its own high power fan running almost ALL the time and fully ducted to do the job well.

Kinda simple but a bit more involved method is about the same as above but as the stock rad comes out you Y the outlet and have some go back to the stock pump and the remainder to this smaller unit and then re joining at the bottom of the steel pipe by the pump.
This would result in likely less strain on the pump due to the strain of the added resistance from a secondary core, so the Y will keep it fed nicely in both directions. Getting it back to the pump would be the issue with space being tight in the area.

Most complicated method.

Have a secondary stat inline to the outlet thats adjustable or preset to a temp thats higher then stock, once it gets to a certain temp it will open bypassing most of it or all depending on stat housing and then passing through the support radiator! Again this involves more work to get 2 pipes back to the stock steel pump pipe. Its all doable IF you got the space and dont mind it being fiddly to re do it all if you need to remove something.

Other then this you got a rear rad setup that could work with a spare tire delete and air from above or under the car forced into a cavity duct and out the back / or bumper.

Even just ducting the stock stuff 100% better will do alot better

 

[Hickory-NC-2Ggsx]

Yeah I ment to say after doing all the ducting and cleaning the condensor and all the normal stuff we preach on here.

I figure I could modify the stock ic duct if it stayed on the passrnger side and use the stock vw fan on the back of it. I should have said this in post 1.

What about putting it on the driver side closer the to pump and and taking the freeze plug out of the pump. putting a fitting where the plug used to be, then just weld a fitting on to the bottom tank of the main radiator?

I know a rear rad would work, but I'm trying to find a simple solution for others to do as well.