I am trying to install Sparco R333's. I have them in now the issue is they sit too high. I have tried Megan's seat brackets and NRG's brackets. The NRG is lowest for the driver and the Megan is for the passenger. However they are not low enough (esp the pass). I have sliders on and would like to keep them. I am wondering if there is something out there that is much lower or should I be looking for someone local to customize what I already have.

Thanks for any help in advance

 

The passenger side is a nut roll, there are no off the shelf options to fix that side. Go custom.

 

I used Sparco bases and sliders with my R100s and the bases seemed to be as low as possible without touching the floor. After looking at the R333 I think your problem may be the thickness/height of the seat cushion rather than the base. Ultimately, I think you may need to lose the sliders or choose a different seat IMO.

 

Had the brackets custom welded lowering them quite a bit cost more than the brackets but now I can fit with a helmet and the pass seat looks immensely better.