1968 bug that needs a 5 speed.

[8v fury]

I own a 1968 bug with irs front and swing axles in back. I dont have a irs rear on my bug. Would like to do the 5 speed transmission conversion, but don't know what I can do and use to make it work. Plus I can't afford another pan (irs) due to space where I am at and family. If anyone has any information or point me in the right direction that would be great. The main reason for the 5 speed is I drive the freeway alot and some long distance driving with the kids.