If one is building a suspension for a larger truck, semi trailer torque arms are a great application.
They are plenty strong, come in adjustable lengths, are designed for this application, are reasonably priced( $40. ea.). The mounting bolts are .875” which is a little large, however, moly impreg. nylon bushings at the local plastics shop are easily machined to reasonable dimensions( .750” in this case.

The use of heim bearings with steel on steel and no lube. opportunity are not a good use.

Ed
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'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.