7.25 to 8.25 Swap Questions
That was dead on.
Your driveshaft WILL need to be shortened.
IMO, I would also order new springs and my advice is to get them from ESPO.com. While you wait for those, order the new U bolts and shock plates. While waiting for everything to arrive (for myself) I Took the time to remove all paint and rust from the rear and it’s parts to refurbish and paint. Man-O-man did that look good once it was installed.
Once everything arrives, after there installed, you can measure for the driveshaft.