For free ofcourse, anyone can say do this, do that, turn here, turn there, torque this, dont torque that, but what if he doesnt know how to use the tools correctly or falls into a problem of his car been rusted and breaks/strips one of his bolts and his stuck there with out a car. I would say go ahead and do it if you are highly confident on your mechanical skills, other than that i would leave it to an expert.