These are great in overall build Quality. Unfortunately, on a 997.1 Turbo these didn t put the turbo back in the OEM position. I would have to fabricate another bracket to the turbo to help support the turbo and not have it solely rest on the manifold. Also a few things would have to be tweaked to fit all the lines and intake from filter. These also sat really low on the vehicle which could end up scraping the ground in certain circumstances. Shame as these are better built than a more expensive alternative. Now I have to ship these back.