Transmission upgrade question

[W1N]

I've talked to few of you about SC's and what to choose and how can you get best boost for $. It is sure looking like I'll go for the Magnusson Radix. So, I've been told that I should upgrade my transmission as well. Sounds reasonable, but I really know very little about transmissions.

So, I've been told that Corvette Servo 2-4 would be enough. Could someone tell me (I'm an engineer ) more technically about this upgrade. And also, how is it done? How much work? I would also like to know how does it change the shifting and drive feel of a stock H2, reliability or service procedures?

Thanks!