what would be my best and safest option for paying my car loan?

I currently have a car with a 43 month term, the balance is $36,706, with an APR of 9.65%, which makes the loan 1031 monthly. Also, I put 200 towards the principal every two weeks. I have two options, one of which is taking a 43 month term with an APR of 6.50% bringing my payment down to $959 monthly, or going with a 48 month term, with an APR of 6.50%, bringing the monthly payment down to $870 a month, but it will add 5 more months to my current loan term, Im willing to add 200 towards my principal every two weeks, I just want to know what would be the best option to take, I appreciate any feedback