[MetalMan]

You can convert the Hyper 8 to a Hyper 8.5, with the Hyper 8.5 chassis, dogobones, chassis braces, and the brace that goes under the center bulkheads.

Big bore shocks would help if you would like to shell out the cash for them.

I never really found a weak point in my Hyper 8 Pro during the ~1 year I had it. However, the plastic bushings that go in the rear hubs do tend to get sloppy after a while, which adds a lot of play. If you keep some extras on hand that won't be an issue.