Free 1987 toyota supra

[badass]

My dad just bought a small house to put up for rent. The previous owner of the house died. He owned the supra. The car came with the house. It has been sitting for more than 3 years under a tree, no rust, paint is ok, interior is horrible (just needs a good wash). Here is my question, the supra has 146k on the clock, the title says exempt under the odometer, does that mean that the odometer doesn't work? Now the main issue, i want to know what should i do before i start this baby. The p.o. removed the battery for security, that's not an issue however. The belts look good, engine looks very clean, radiator is DRY. So what needs to be done before i pop in a battery and start it. Also do i need to drain the gas tank? If so, how. Sorry such vague questions, thanks, btw great forum.