[radioactive]

I am fairly new to metal polishing and have a set of aluminum chevy 350 cylinder heads I am polishing. My question is if there is any agressive cutting buffing wheels in the 2 to 4" range. I use a lot of 8" airway buffs and love them and would like to find some small wheels that are a little more agressive than the regular sewn cotton buffs. Also if anybody could share there tips or tricks on polishing aluminum heads it would be greatly appreciated.

thank you
radioactive