Poly Locs or Similar

I've never broken a mount since using a $3.00 piece of chain as a torque strap..

Chain the drivers head down to the K'frame..give it about 1/4 - 1/2" of slack,, so it doesn't transmit vibration to the frame at idle, and wrap it in electical tape, so it does't rattle..

That's all we used on our hemis and anything else,, "back in the day" till now..

But I like the bolt thru the mount idea, and will check it out..

hope it helps