I ran an 82 F150 with a built 300-6, that truck was fun. It had no problem keeping up with the solid axle GMs and Fords, and when the terrain opened up that thing would sail. The TTB front end definitely had its issues (ever seen the "dynamic toe adjustment", lol) and it honestly didnt articulate well until you got a set of longer radius arms on it, but even in stock form that suspension could soak up some bumps at speed like no other.
To Add: My final thoughts on this are simple, I would much rather run a well designed and built IFS set up than a poorly designed and built solid axle. The unfortunate reality is that everyone has been cheapening their solid front axles for years. Wall thicknesses are not as much, ball joints replaced king pins and trunion bearings, and unitized wheel bearings replaced dual tapered roller bearings. About the only advantage that a live axle has anymore is the fact there theres fewer joints in it for transmitting power. So for big tires and big power yeah its a better option, but for overall strength and performance, the gap is narrowing, big time.