No, I wanted to get it together and running since it's my only (drivable) vehicle. I used a Cloyes true time timing set that doesn't allow much adjustment anyway (2 retard, straight up, and 4 advance). I haven't seen much for timing sets that offer more for the Jeep/AMC I6. At any rate, I haven't even gotten the motor broken in yet so I haven't seen what it will really do. I haven't even had it over 3000 rpm yet. I don't expect too much since I'm still running the stock 3.73 gears on 33x12.50 KM2s, and very little for bolt-ons