MYSTERY DRIVESHAFT.......IS IT THE RIGHT LENGTH?

This shaft is 1/4 inch longer, but the yoke s 1/4 inch shorter than my original....Both have the same total length but my original is pitted badly. That's why I installed the mystery driveshaft and posted where it ended up.

This rear seal has no dust boot as I am accustomed to seeing. Just the seal that came with the kit which is flat.
The boot is about 1 1/4 inch so you should be good