First off get the windows tinted. That will cure half your problem by blocking UV rays. Secondly, get A/C, the summers are way too hot now not to have it. Price shouldnt be more than 500 bucks if you source the parts from a good boneyard. The price comes when they retrofit it for the 134a refrigerant. I say do it, you wont regret it.

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If speed is a drug, then that makes me a drug dealer....
I guess that means I got a whole bunch o' you muthaf*ckas hooked !!