I think your best bet would be to check the websites of the companies that make the parts you’re looking to get and inquire about a discount for Black Friday. Afe usually has deals running every so often. Lethal Performance also usually has discounts on major holidays. Whoosh is a great vendor so check them out as well. Steeda another good one. But usually I email them and inquire the week of the holiday. Just a disclaimer though, some parts are already at a discount from MSRP and usually don’t qualify for the promotions I’ve noticed.