Not sure how much you could (safely) take off the smaller Hemi pin dia but you can shorten BB (1.09") pins 1/4" off each end & still (safely) maintain enough pin/piston contact area & will lighten it (these I have) from 191 to 159 grams if you have access to a lathe or if it would be cost effective for you to pay that shop time. Pressed fit of course