No problem. unfortunately i dont have any good right side cases i have 2 left sides that are good. go figure. as far as parts interchangeablity it basically goes like this 85-86 are the same 87-90 are the same except for cylinders 87 has a big reed intake and then theres the 91-92 which are the same. the motors are the same from 87-92 except for the 87 having the big reed intake but they can still be used on any bottom end from 87-92. now if i can remeber correctly i believe the 87 LT 250R bottom ends  had slghtly different gearing then the other years but im not 100% on that.  A arms, front shocks, brakes and a few other misc parts are also interchangeable through out all years 87-92 and maybe 85-86 but not sure ive never really messed with the 85-86 years so i cant say for sure on those. anyway hope this helps