Depending on the system...I have the B&O and my kick panel speakers are only woofers, no tweeters, so I'm not sure that would be much of an improvement over the stock 4".
I had no issues reaching 70 mph on the Moab off rodeo sandy two tracks. This was a stock Badlands 4 door with HOSS 2.0.
I have the same on my 2 door Badsquatch, thinking of 8112's when the time comes.