Im looking at doing a cowl cai on my XJ but I have the Renix coolant system so I cant get behind it to put the filter in place over there. Where else would be a safe place to put the hole for the filter? I wanna keep the filter off of the track for my wipers and dont want water to get into the filter. I plan on removing the stock air box but have to figure out how to fix the issue of having a vacuum leak do to the vacuum actuated flap in it. Any suggestions on fixing that as well? Pics would be great