Welcome to the forum.
First off, there's no way you can rebuild this engine and do it right without a service manual. Pay close attention to the torque values, if you don't, trouble is just around the corner.
If you have the 97 model than you have the 3.5L SOHC, so download the 1998 manual.
Go here and get the service manual http://www.mitsubishilinks.com/
To answer your question, here's a picture.
Do you have the tool to adjust the timing belt tensioner?
GrassCat III, 1994 Montero 5 speed stock ( for a little while ).
GrassCat II, 1998 Montero with winter package. All the bells a whistles. Ran off with Hector.
GrassCat I, 1991 Ran off with Justice R.