It is not a 1986 bj42. The very last bj42 that Toyota made was produced in Oct1984.
From the vin number you posted in your ebay listing:
"VIN (Vehicle Identification Number): bj42007027
Year: 1980"
What you have is a BJ42LV-KC that was made in APR1984. It doesn't matter what your papers or title reads--it is still a 1984 BJ42.
Here is another current ebay listing for a bj42. This frame was made after yours (AUG1984--as in newer). Note that the owner has it correctly listed as a 1984:
"Condition: Used
Seller Notes: “YES...this the original 1984 Canadian model ,left hand drive BJ-42 , factory 5spd and power steering stock version, there was only 188 all terrain vehicle like this import and sold in Canada during year 1983 -84 ,very rare specially 1984 with some little changes ,like secure open handle from inside cabin .,The truck is almost fully restored accept engine ,transmission and drive terrain ,where fluids was replaced with seals on both axles was done ,please remember this car have only original from new 188.000 km or 130.000 mileage from new which for this 3b engine is only begging of his life ,with proper service and good oil can go up to 1.2 million km .There is many ,many new parts installed included - new original Toyota mufflers , all exhaust system is new ,(expensive) all shocks., lives was reached ,all bushings .,all front rods with robber coshing's .,all new lights., signals, Toyota original fenders .,and rear panels .,new heavy duty step bars., ARB bulbar, winch ,and more.”
VIN (Vehicle Identification Number): JT3BJ42COEOOO7742 Year: 1984
Mileage: 130,000 Make: Toyota
Sub Model: bj 42 Model:
Land Cruiser
Exterior Color: Red Trim: bj 42 1984
Interior Color: Gray Engine: 3.4 l diesel ,4cyl
Vehicle Title: Clear Drive Type: 4x4"