'70 Super Bee driveshaft length?

[beeguy]

Does anyone know , or know where I can get the proper length for a 70 Superbee 4 speed drive shaft ( or driveline as some people say) ?

I found one for a '69 Roadrunner but I think those had a shorter wheelbase?

 

[69 Runner]

The difference in the wheelbases of a Dodge and Plymouth were in the front spring hanger. It's about 3/4 inch. I doubt you would have an issue....especially since I went the other way and "shortened" the wheelbase of my (ex) 69 Super Bee an used the original driveshaft.