67-69 dart 904 318 drive shaft 8 3/4 rear end

Really need a drive shaft for my 69' dart 318 . swaping out 7 1/4 rear end and need a drive shaft for my 904 to 8 3/4 . all the above info is correct I know what I have and know what i need. message me if you can help out.
Thank you,
John