Fork tube swap

[ValorSolo]

I recently bought a dual disc setup for my 78 GS750.
I've looked over the manuals at Bascliff's site and have an idea how to proceed.
But I still have a few questions before I begin the installation.
Mainly, how do my forks differ from the ones in the guides?
Will the process be the same? Same tools needed? Special instructions?
Where do I buy the seals, o-rings and boots specific for my model? Answered
Can I use my old upper tubes with the new lower tubes? Answered
My uppers are nearly spotless, more so than the new ones.

Any other info that I might need to know?

Thanks.

[ValorSolo]

I managed to answer a couple of my own questions.
Maybe not the best answers, but that's what I've got.
I suppose I can figure the rest out as I go, if necessary.

[hampshirehog]

Everything should cross over ok. All the parts can be bought in a hundred different places - just Google the part numbers and choose.