I swapped cabs. The truck frame in my case is titled and registered as a 1984...the cab is from a donor 1987 model. So the vin tag on the donor cab (87) was removed and replaced with the 84 vin dash tag
Currently, the frame vin, donor cab vin are the same...just different cab. The 1984 cab was badly hail damaged, rusted at the drip rails and the door hinges were also beyond repair on the cab section. Standard non rosette rivets were used to attach the 84 vin to the 87 cab. The title reads "restoration".
If you are just replacing the dash..as long as the frame vin, and dash vin remain the same...it should be fine. I personally wouldn't worry about using the rosette rivets. The mvd only cares about matching vins and a clear title.
Only a Chevy buyer would even think to lok at the rivets, but in the end if the title and all vins match it should be fine.