Well much cheaper than the $60 dollar one posted on the bronco site. I ordered one but don't know about the quality yet or fit either. I will edit my post when I get mine as they are on back order and let you know how it fits on my repo pie pan air cleaner.
http://www.summitracing.com/parts/PRO-302-350/ (http://www.summitracing.com/parts/PRO-302-350/)
Base plate is of a heavier gage metal than the repo pie pan and fits very nice with a bonus of the air filter being more centered. These two comparson pics kinda suck but its still better than nothing.