towing capacity

Hello! Does anyone know what towing capacity would be for a 1980 HJ45? I’m thinking of towing a travel trailer for now. Thanks!

I've had a 100 series since I joined the forum in 2010, bought it with 110,000 miles... now has 288,000 miles. Not only do I drive it every day, I'm an electrician, albeit for an apartment complex so I dont haul heavy stuff 95% of the time... it is a rolling tool box. Also garden and hobby...