I’ve used fj80 arm as the stock Toyota pitman arm didn’t have enough throw. I’ve also used sky’s splined section and built my own longer pitman arm. Fj80 is 7.25” center to center with 3/4” of drop iirc.
This of course will dictate where the box needs to set. You may not be able to get it forward enough to run the longer arm with out deleting front body mount.
I’ve been using fj60/80 boxes since they’d forward swing. Just have to notch the frame to get your up travel if that makes sense.
Hope this helps.
Build your own Toyota Pitman Arm with our new machined and splined chrome moly Pitman Arm spud! Fits all Toyota IFS steering box's, 1986-95, including T-100. 2" outside diameter, 1" thick. 100% American Made out of 4340 chrome moly bar.Requires ability to work with chrome moly, TIG welding is...
www.skysoffroaddesign.com