7.25" to 8.25" driveshaft?

I don't know how far in to go. It would be nice to be as exact as possible.

I measured the 7.25" on there now and it's about 51.5" center of one u-bolt cap to center of the other. And about 3.5" from the center of the front u-bolt cap to the end of the transmission tail housing.

The length you're needing is 49.9 inches. Give or take .250 will work

So that would make the 8.25" driveshaft roughly 1.5" shorter, which is what H22A4 just gave me.