will the running gear off of an 88 blazer fit on a 94 blazer. diffs, trans, trans case, driveshafts. is there a book available to show which parts are interchangeable. thanks

 

Depends!!!!
Need more info about the 2 trucks.
year, make, model, and trim package. Number of doors, engine size, 2wheel drive or 4wheel drive. ZR2? Stick, manual?

There are many parts that were used through out the years.
You could try LMCTrucks.com and order there '83-'04 Catalog. Or provide some more info, specifics of what you want to do.