[Geo Metropolis]

I simply covered the whole bottom, trimming only a small section where the headers came in contact with the coroplast. The result was coroplast melting in 2 other places where the exhaust heat was too much but no biggie, I just had to smell it for a day and then it sorta self trimmed itself. My plan is to buy aluminum flashing (basically a big roll of sheet aluminum that's very inexpensive and can be cut with scissors - hardware stores in the roofing section) and rivet it in as patches for the open sections. I haven't gotten to doing this part for a reeeaaallly long time and one bummer is that in the trimmed sections the heat has caused the coroplast to curl a way from the heat a little bit and made my belly pan a bit less smooth. The flashing will fix this whenever I get to it.