Timing belt replaced with geared drives & chain

New to this any one come across a replacement timing gear system for the belt on the 4G63 engine, eg Gears and chain system.

 

[brisvr4]

Ummm, this was answered on the Aussie forum that you posted on yesterday /ubbthreads/images/graemlins/dunno.gif
No, don't really know why you would need/want a chain system as long as you keep an eye on the belt and change it when necessary. Accidents to happen now and again but thats life.
If you want a timing chain so badly you could just go and buy a Magna.