So after trying to take apart the center dash area and still unable to access the 3 screws on the left side I took a pair of vice grips and backed the screws back so the panel would move enough to pull the right side out to remove the fan. Once I did that it went back in easily and I used the vice grips to tighten the screws again. I bought the fan from Comfort Air.
https://comfortairgr.com/shop/12v-bl...evans-tempcon/