I have never done it on the alltrac, but I did do it on a sw20 mr2 (replaced the HG while leaving the block in the car) and it was still pretty rough. The good thing about the mr2 setup is that you can atleast sit in the trunk while working on the motor. As for the 165 I think you can pull it off though. Its just like anything else on these cars, its gonna be difficult. I know some will prob suggest to just pull the motor/trans which is what I would do but you prob would have done that already if you wanted to go that route.