I use Royal purple in all my cars, ESPECIALLY my muscle cars. Royal purple has Zinc, needed for cam breakins. All my friends run RP in their street/strip muscle cars. From twin turbo Chargers, to blown Cudas. Not sure about their filters, I like the KN screw offs.
Also, what kind of dirt oil do you get for 14.99? BP Select or some other garbage? I also work in a quick lube shop, Castrol is our house brand. Penzoil is garbage, Mobil 1 is great.