i need a good forum like this one to find out more about my yota axles and if its like 9",r's im used to   are they really drop out and interchangable?
also  wanting to talk to someone who has hooked up dual sami cases?
any help?

try this place they seem like nice people(not as nice as here,but that is hard to find)

http://wildyoats.com/wild_yoats_entry.htm

jason

yes, the 8" is a drop out third like the 9".

No idea on the dual sammi cases.

they are also interchangeable. front & back

Check over on Pirate for dual sammy cases.  It has been done a few times but there are a few issues that make it a pain.  The cases are underdriven in high range (1.41:1) so when you add in a second case you end up with a high range of 1.99:1.  Almost as low as the stock low range.  The way the cases are mounted also makes it really difficult to come up with a solid mounting method for two cases.  You are better off looking at using a sidekick trans and tcase and putting them in front of the sammy case.  There are several examples of homebrew methods that work well for this. 

 I have just made a twin t case for my hybrid.
toyota axles on a lwb track (vitara over here)
was easy to make.
building cross members at the mo.

The 1.6 is a reasonably straightforward swap for the 1.3. It has been done lots of times so there is plenty of info and lots of people to give advice. The 1.3 responds very well to a Weber carb and header (around same peak power as the 1.6, less torque). Weber can give problems on steep inclines. Zaggy is the man for tuning Zuk engines.