Hi, Does anyone know the difference between the 85/86 1 ton pickup/4 runner front bumpers and the std pickup/4 runner bumpers? The dealership and aftermarket suppliers all state the 1 ton truck is different. Will one of the standard pickup/4 runner bumpers work? Guess I prefer the 3 piece though the 1 piece is more practical

I have 2 1 ton pickup trucks. An 85 pickup I bought new and an 86. Both have the 3 piece front bumper. My 85 is a manual trans and the 86 is an automatic. Both 22rec engines. I need a new front bumper and other parts for the 86 due to hitting a deer. The problem I have is that there was something different about the 1 ton verses the standard 4 runner bumpers that I am not familiar with. The only bumper Toyota currently provides part numbers for supersedes to a 1 piece bumper that was discontinued. I tried getting more information from 3 different dealerships but with no success.
I have not been able to find either of the 3 piece nor the 1 piece bumpers and associated components offered as an aftermarket item for the 1 ton. What I do find is stated that the bumpers do not fit the 1 ton. I do not understand why they do not fit the 1 ton. The 1 ton uses one of the standard grills found on the lighter duty trucks.
I also have not found anyone offering the tubular backing (bumper stay?) for the front bumper for any of the 85/86 trucks. Just the mounting brackets that are welded to the steel tubes. My tubular portion is salvageable but rusted thin and the mounting brackets are crushed. I don't know if the aftermarket replacement standard mounting brackets will work for the 1 ton. There were apparently 2 different versions of the bumper stay. One with simply curved tubes and a version with 2 bends in the middle area. Mine are the type with the 2 bends in the middle portion. My 85 had the optional rubber bumper guards on the front face bar mounting bolts.
What I do know is that the 85/86 one ton pickup was built entirely in Japan to meet the USA regulations. It is IFS front. 2 wheel drive. They have a Japanese 7ft box. The VIN numbers for the 1 ton pickup start out a JT4RN55xxxxxxxx.
Toyota says the 3 piece bumper face bar for either of my trucks is a 52111-39585 or 52111-89134. These were replaced by 52111-89152 which is a 1 piece bumper. It is stated that this only fits the 1 ton.
Here is a photo of the 1986 1 ton followed by the style bumper stay that is used.

1986 1 ton with Hella E code H4 headlights.

This is the style reinforcement/bumper stay used on the 1985/86 1 ton.