The mighty kong picks up more points than the standard mounts. Its really up to you. I havent heard of someones transfer exploding in a mightykong, But have actually seen the rubber mounts snap from 6.5's and a mightykong. (Lumpacharcoal) Was spoa,31's,6.5's,3.9's. But alot of peoples rubbers mounts do snap.
When you fit it, make sure there is enough room to change the single rubber mount on the track. Lumpa was just lucky. He also carried a spare. I never carried a spare, as my roctoy would hit the floor before it would snap a mount...Which is handy
