First have a look at your throwout bearing sleeves. If you have a long and a short type then you have your choice between the 2 flywheels. If they are the same weight then the decision is 6 <> 1/2 dozen. Personally I would use the A12 flywheel as the mass of the flywheel is closer to the crankshaft. With that use the longer of the 2 throwout sleeves. (i'm pretty sure you have both) Probably a 1200 ute clutch should do the job nicely for street use.