Why don't you try this, I tried but it would be cool to see if you could do this, Working on the rear fenders why don't you add an additional rear fender to bring out the width,and also the rear fender lip should try to be inline with the hub of the axle, or lug nut area. Your making it look like a more stock fender with big tires in back. I tried a 66 gto rear fender and it looks bad too wide ,but I like oval opening of the rear fender. I also was gonna suggest ,closing the hood opening, so it's more daily driver look, as for the blower thats up to you!!!!!!! Maybe header outletcovers, and exhaust also routed under the chassis. (Just like cut outs)