I thought these engines were OHC..hence no lifter?
Yes the sound is a TSB, but all OHC engines have a slight ticking sound to them. Listen to a Honda run, or an older Escort with the Mazda DOHC 1.8 (or its also in the MX-3 and Miata). All haveaslight ticking sound. Though, if it is loud enouh to be a concern you probably need to have your dealer check it out.
2006 Mustang GT in Torch Red
C&L Intake, Evolution Performance Tune, Borla Axle Backs, Hurst Shifter, 4.10's, JBA Long Tubes, Prothane Engine Mounts, Steeda UDPs, FRPP Charge Motion Delete Plates
84 Bronco, 302 C6 on 32 10.50's