just wondering are there any differences from GSR & ITR waterpump/timing belt/

what i have i noticed the itr waterpump has 19T stamped on the face of the WP, and i'm not sure about the timing belt, i have a GSR timing belt will that all work out..

and distributor wise, can LS dizzy be used on vtec heads? is there some way or another to make the LS dizzy work on vtec heads? I'm hearing that it could/possible/maybe. but haven't known anyone that has done this b4. lmk something TECH'S