Will it work

how wide is a 1987 Chevy s 10 and jeep wrangler at the axle’s? i want to put a jeep frunt axle on the s 10.

Only you can answer this for yourself.
You’ll be matching more than just width and will need to be there in person when looking and measuring the mounts, tie rods, ratio, bolt circle, steering geometry, etc.etc.etc.

And steering gear…will it mate?

I’m totally bewildered at this idea. But, admittedly, my enquiring mind wants to know…why?