1996 T56 conversion HELP!!!!`

Ok so I have run through 5 T45's on my 96 cobra. I don't make a ton of HP, but I do run through the gears. I heard the T56 was extremely strong and I shouldn't have a problem breaking syncros or bending forks etc. I know I am not the first to put a T56 in a 96-98 cobra so I need some help.
I just bought a remand 03 Cobra T56. For those who have done the same...(not those who just bought a D&D viper conversion kit) What do I need and what should I expect?
Here is the obstacles I have ran into thus far:
1. Shorter drive shaft
2. Move holes back on cross member
3. Speedo needs to be setup for mechanical(magnetic) not electronic(gear)? (any conversion kits for this?)

Any ideas on the fastest/most efficient way to do the above?
I replaced my last T45 myself and squeezing it by my BBK longtubes was next to impossible. Any shortcuts this time?
Thanks for any help!!!
 
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