Hi Kurt;
I have heard and seen the T-62E, but a Mk;2 I have not heard of. The only kit is Trumpeters T-62 kit, and stay away from the Tamiya kit as it is not accurate. If you are thinking of one of the T-62s used in the 73 Yom Kippur War then the early Trumpeter kit is the only one too use, as for your conversion there are a number of AM companies that make extensive conversions. But depending on the example that you are trying too model, you mite have too do a little bit of scratch building. Check your references and take notes.
GOOD LUCK; MIKE.