I think all points made above are great valid things one must consider. Your asking a truck that was designed to travel 50 mph to travel 28% faster than designed also using old likely worn out parts. If you want your truck to perform like a modern car, it needs updating. Just to new well working stock parts are fine, but you need a fresh start.
My truck travels those speeds all day long. But it also has all new modern tie rod ends or safer parts, (still drum brakes) but it is all new and in good working order. I inspect all part at least annually.
I'd consider yourself lucky that something didn't fail and harm you or someone else on the road. Agree, irresponsible to consider driving down the block w/o a complete overhaul of brakes and suspension.
~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
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