Not much. Bolt on turbo oil drain flange, the turbo itself, connect the oil lines, connect the DP, screw in the o2 and WB sensor, install IC pipe coming off the turbo, plug in the vacuum line to that pipe for the wastegate, install the belt tensioner and radiator, and get a mid-pipe and dump tube created (can't do that til the Supra is driveable). It may look like a long list but everything won't take long to do, maybe a couple hours tops. Because I don't believe my friend actually shipped my belt tensioner I ordered one last night, it'll be here in the next couple days.