Where? only the 1&1/2" diameter tube to the frame. You can choose to leave this not welded and have the bolt hold the entire thing. I would recommend welding the tube onto the frame. There is also a brace included in the lower set.
88-95 Isuzu pup upper and lower control arm set $458
Comes with all 4 tube arms, Energy Suspension poly bushings, upper screw in balljoints, upper crossbars, lower crossbars, shock tabs, braces and all grade 8 hardware for installation.
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88-95 Isuzu pup upper control arm set. $219
Includes Energy Suspension graphite impregnated polyurethane bushings, balljoints, crossbars and all hardware for installation. Uppers made with 1"x.125" wall DOM tube.
This is what you get with this upper arm set.


Isuzu uppers install pics
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88-95 Isuzu lower control arm set. $239
Includes lower crossbars, braces, Energy Suspension graphite impregnated polyurethane bushings and all grade 8 hardware for installation.


Isuzu lowers install pics