Hello guys, its me again

I have problem, I am doing a conversion (long story) so to cut the story short I end it up using Nissan patrol´s MQ drive shaft front and rear. On the GQ front differential the drive shaft flange fits perfectly on the diff flange but on the rear the GQ´s rear diff flange is wider on the bolt holes than the front ones so my questions is:

- ¿ Can I find another flange like the front one and place it on the back diff so I can fit the drive shaft perfectly.

- ¿ Or can I change the drive shaft flange to fit the original GQ diff flange? and will it still use the same universal joint ? so all I have to find is either a diff flange or a drive shaft flange.

Or what do I dooooooo, Please help and advises.