Quick question guys. I have a 92 GTS-T and I will be installing the JapSpeed bellmouth downpipe. I have access to a lift. Can I do this job completely under the car? Or will I at least need to undo the heat shield from overhead before moving to working under the car? I can see all 6 elbow bolts by the turbo from underneath the car, so I feel like I can do the install without having to remove the heat shield. Thanks!