I would think that the best way to approach this project would be to find a complete 740 manual trans car - or at least complete in terms of all the important stuff. That would give you ALL of the little tid-bits that you'll need without a lot of fussing around with adapting pedals, drive shaft, cross member, rear mount, wiring (albeit minor), different ratio rear end, and the list doesn't end....

I did what I consider to be a "proper" auto-to-manual trans conversion in my '73 1800. Although it's a much different car the basics are the same. Looking back, I don't know how I would have pulled it off without having a complete donor car from which to pull parts.