I found a driveshaft that i need it has the right transmission yoke but the rear is for a 9in ford.... i have a 10 bolt for now will it work ? is it no good ? or can i change it.

 

You should post driveshaft questions on the "Drivetrain" board.

Your stock 10-bolt probably has a 1310 series u-joint. A "9-inch" may be a 1350 joint. You need to verify both numbers, and get the part # for a "cross-over" u-joint that will fit the pinion yoke and the DS yoke.

 

its a bone stock rear... i will find what the drive shaft is