curb ramps

So I Lowered my Supra, and I got a bigger Exhaust (Seibon). Backed the car up in the drive way and there was a bit of rubbing,. Any options for Curb Ramps you use that work great? I know sites have all kids of options, but I'd like to know what you "actually use" that works, versus just...

Has anyone had any experience with any curb ramps or other solutions? The front end just barely makes it in by about 1mm. Suprisingly there aren't any scratches on the bottom of the front end. I have to go super slow and at a angle to not bottom out. Wanted to see what suggestions anyone has...