My 82 KZ 750 rat bobber

Hi-
I'm new to the site and forum, but will probably be here quite a bit. I just bought my 82 kz 750 for 100 bucks,and should have it running soon, just need some help in a few spots.
I was wondering:
What model do I have?
My engine is stamped KZ750EE065320, but I'm not sure if its a H1, H2, or H3 and frankly, what the difference is.
My frmae is also stamped for manufacture in 6/81 and was wondering if I have an 81 instead of an 82.
I'd appreciate any help, thanks!

on build dates if it on or over the halfway mark for the year it's the next one up. I'll look up the model for ya.

EDIT: it is a H3. I thought Z1E would have VIN#'s for different bikes but just the year shows it's a H3

Are you going to bob it? It can't be a rat with all those factory parts

Thanks! I may need to order a gasket kit and that'll definately come in handy!

It'll be a mix, a clean bobber with elements of "ratness", mixed in over time. I'm going to fab handlebars, a new seat, and checking today apparently a new petcock valve for the gas tank, since it's bare under there.