Is a rear axle out of a 94' tahoe the same as a 91 blazer?I know the shock and spring perches will have to be moved but are they the same width?

 

It should fit no questions, the carrier and gear ratio may be different though. I had a 10 bolt rear end from a 92 c10 silverado in my blazer to get me by for a while until i got the right one, but instead of 3.42:1 it was geared at 256:1 so i couldn't use 4WD until i got the right gears.