Would a rear disk conversion kit for a 2002 echo work on my xB??

bump

It might. It just hard saying if it would work with the ABS & VSC.

The cars are built on the same platform, and use many of the same parts. i would imagine that the electronics are the same for both cars. Any work in a service department have some parts number or fixed both cars and knows if they look the same??

Yes they share parts & stuff. I just dont see the vitz with VSC listed as a option even.

anyone else have any info on this???

you'll be taking your life into your own hands at that point... you would need to permanently disable the VSC and the EBD because the system will apply x% brake pressure as required to elimate skidding out of control, or correcting a skid... so you want to up the size of the rear braking capacity, but you aren't spending a dime on the front...

imagine having the strongest brake in the world on your BMX front tire... panic, squeeze with normal exertion... and kaboom... you are on your butt...

now add 2400lbs of steel...