Suggestions to contain rubber from burn outs

I have a 1977 Dodge Aspen that is street driven and raced weekly at a local track. My problem is burn out rubber on the rear fenders. I have mud guards but they don't stop all the rubber. The tires are MT 275/60/15 drag radials. It's a pain to clean the fenders each week. Are there any other guards available that do a good job and look pretty good as well?
Thanks
Dave