81 parts on a 77 or 78?

[Mechdawg]

Hello all again,
So we have two projects going here my wifes 78 wing (she is going with a mix between cafe and steampunk with it) and my 77 wing (soon to be a cafe mod I hope). We have a friend who is more than willing to donate his no title siezed up 81 GL1100 to our cause. What if any of the parts on this thing can be swapped over to the 77 or 78?

Specifically I need new fork lowers on the 77 as well as several brake parts. I need carbs as well for the 77 however I already know from Radakks page that those wont work for me.
Thanks all.

Tim

[CYBORG]

forks are larger. would have to change triple tree as well. headers will work. radiator and a few other things. but they are a different bike in more ways then they are the same

[Mechdawg]

Thanks. I don't mind changing the triple tree as long as I can make it all fit. I do need headers since mine were rotted where they connected to the horseshoe. This poor bike spent to much time outside before I got it.