I think you're right, I think I'll start with the grill block. I have an electric fan anyway, so thye heat shouldn't be a factor unless I get overly ambitious with it
Kambacks look goofy and hard to install (unless you use cardboard and duct tape of course), but I did see a post from a guy who ran a computer generated wind tunnel test on a Festiva using a detached rear wing that looked like it cut the rear resistance alot. I might try that out if I can find some kind of kit to do it
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