i have not felt any extra wind resistance, as a matter of fact i have the best mpg to date after installing the pans front and rear, 51.52mpg U.S. i did not seal up the front wheel wells so i guess the air comes out there, well enough to not cause drag. i also did a complete grill block on my upper grill, and have had no heating problems yet,, but i have not had this all installed but for a week or so, so the summer might require some changes, i am going to do a middle pan that will connect the rear pan and the front pan,,im going to use the wire mesh from home depot used for stucco installation under the cat converter and resinator, the muffler runs cool enough to be in contact with the coroplast (no melting so far), as far as where mine ends id say right at the fronseat for the front pan and at the rear axel for the rear one.
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