Not exactly sure about the tool. But I did find a site that explains how to change the belt on a 3.0 V6 Mopar (
clicky ). Do you have a picture of the cam adjustment tool, if so I may be able to get a better idea of what you are using. Last time I changed one was on my Probe (2.2L), it may be similar or completely different. Mine wasn't dohc either.
Sean