Yes the 87 and 83 are both YJ's
No.
Not unless you're good at "gerry rigging." The YJ and the TJ have different body styles.
Yes
YJ body type and all parts are interchangeable, 87 thru 95 are all YJ.
yes, from what ive seen it should with little to no modifications.
yes, any top for an 1987-1995 can be switched out
NO, you will waste your time and money.
yes it will fit1997-2006
No, they are different body styles.
No. Don't waste you time.
The 1997 wrangler or jeep hardtop can be replaced by any jeep hardtop from 1997 to 2005. The answer is most probably that a 1995 hardtop will NOT fit a 1997 TJ.
The CJ and YJ tubs are the same. So yes it will fit.