100mph is all you need on road or off IMO. If you live in the desert like me, maybe 120 max. I rarely pushed my SRT Jeep over 120mph in the 5 years I owned it. Ha, ok...maybe a couple times but it was factory speed limited to 155!! I took it up to 190mph with the Supercharger + Limiter removed. Anything over 120mph is extremely dangerous.
Speed was a huge reason I switched to Raptor ie bigger,slower,stornger,safer than any car Ive owned outside of exessive body roll possibility's.
I'm not sure what my most dangerous driving experience was, maybe thunder rd iin TN with my Dad in his Viper YEARS AGO ie '94 or possibly driving a '97 S600 Benz at night with lights off via A1A in north FL @ about 165mph!! It was a full moon. Haha. Many other moments I shouldnt have made it through years ago. Im so thankful now to still be alive and getting a Raptor!!
In conclusion, if you want more speed just get something else as the Raptor is to big to handle those speeds safely nor was it designed for same. A kid driving his modded truck 120mph on a dirt road he used/drove that fast on daily (Indian tribe/land) rolled it and pretty much decapitated himself (only half body was ejected so you can imagine the damage when the truck started to roll @ 120mph) about a month ago. His friend was behind him and said his buddy that wrecked was still alive for 2 hours (somehow) before dying at the hospital!? I cant imagine the pain/suffering for the kid, his friends,and family. Not good.
Have fun but also value your life more than your truck.