Corolla 4AG-E: Many amateur questions (incl. W58 gearbox)

[DatGameh]

Hello

Some time in the future, I plan to get a Corolla Ke70 as a first car. After some searching, I luckily found one swapped with a 4AG-E Blacktop. Being someone's frankenstein, many parts will definitely be refurbished or replaced with a help of a friend. But one part that concerns me the most.

The T50 gearbox, as everyone knows, is fragile and ages horribly. Due to this, I want to replace it with another trans as soon as I get it. But this time, not a T50 again. I found a transmission adapter that allowed me to connect the 4AG-E to a W58 transmission. This, along with a bunch of W58 transmissions being sold for ~$480 is quite a deal.

Here's the link: http://www.sq-engineering.com/4age-to-w5x-gearbox-adapter-kit.html

With the introduction done, here's the actual point of this post (Ke70 questions). On a small note, I have relatively low knowledge on cars. Due to this, some of my questions may sound quite general.

1. Will I have to make any clutch mods if I were to do this W58 transmission mod?

2. How will I manage a driveshaft for a Supra gearbox and Corolla differential? Will I have to cut and wield them together?

3. If I were to get aftermarket parts (e.g. LSD, half shafts, etc.), will AE86 parts do just fine?

4. I haven't researched much, but from what I can tell, in a 4AG-E conversion for a Ke70, only the engine and gearbox is changed. The driveshaft, differential and axles are unchanged, right?

5. If - by any chance - I will have to replace the rear axle to accomodate the gearbox and driveshaft, what car's driveshaft will be compatible with the Ke70?

That's my main questions so far. I'll come add more I have more questions.

Thanks