87's were used on the first 2 years of 262's then 120's. Not sure I saw any others listed on IPLs.... But the computer IPLs skip years assuming there's no updates. So if that helps any, you're looking for 1990-1991, maybe early 1992 262 carbs.
easier to just bolt one on than mess around makin chips........but if it comes to that. i found some other carbs i think will work. the guy claims they were off 262's and they have the same bore as the 87's. im pretty sure they'll work