I want to upgrade my bike which is a apache rtr 160 fi. I want add some this below mentioned stuffs

nightstalker fx
tubeless tires(preferably Michelin)
Apache rtr performance kit(I don't whether it exists or not because i get to know about this through net, but when i went and checked with TVS showroom guys they told they dont know anything about it)
Central locking system for bikes
GPS Sytems for my bike
power commander
NGK iridium plugs

As currently i m in b'lore and dont know where i can find these.

And another question - What is the max size of tyre i can fit into?

can any of you help me out to sort out the issue..................And further if you have any suggestion for the same please let me know.........