Balanced & lightened flywheel. A trick to installing this is to use two of the bolts to position it, then using locktite (blue) on the remaining 4 bolts snug it up, remove the first two bolts, apply locktite and snug them up, then torque (71-75 ft lbs) all six in diagonal pattern 1--4, 2--5, 3--6.
You must remove all of the remaining (old) locktite from the threads of the mounting bolts if you are re-using the originals before installing. If you can't get it off, use new bolts.
Note the red circles in the photo below. These indicate the positioning studs where the Clutch pressure plate will be mounted.