I have a 400 big bear all time 4x4. I also have a blown up 350 bruin with a good front diff. But the bruin is push button 4x4 so it disengages. Can i take the 350 front diff and put it in my big bear so its not all tine 4x4???????

 

Unlikely, if the driveshaft splines are the same, the propshaft spline is the same, the width of the diff, and the length, so the prop shaft isn't either too long or too short, the mounting points on the chassis is the same, it would fit, but what are the chances?

 

Look up all the part numbers on partzilla.com and that will answer all your questions

 

No it won't, for a start, the Big Bear has a front prop shaft with 2 UJs, the Bruin, a short splined shaft with no UJs, so totally different parts, doubtful if the Big Bear shaft would mate up with the Bruin diff nose, but the parts book aint going to tell you.