whats the year of LC rotors that they sell as an upgrade to the stock rotors on the trucks and 4runners, like on the marlin site or AOR etc. i want to see if i can just get them at a local parts store instead of ordering them.

 

81-88 LC vented rotors

You can't use them with the stock 85 solid-axle calipers, you have to get 86+ (IFS) calipers also. The IFS calipers came in 2 types, 4 cyl and V6 until 92 or 93, then they all came with the V6 calipers wether 4 cyl or V6 equipped.
The 4 cyl calipers have 2 small + 2 large pistons (like the soild axle calipers) while the V6 calipers have 4 large pistons.