Where were you 2 weeks ago? I just bought the planted rails new...

 

Interested in planted, but any comment on how much lower it was than normal seating position in OE or in Sprint with the humps?

 

I ran it with a Racetech RT1000 with the humps intact and it was about stock seat height. Once I removed the humps it was the equivalent amount lower (maybe 3/4"?) which got the seat low enough for a 5'9" buddy to pass broomstick. The way the mounting holes were set up on the Racetech I could never get it super low.

Here is an excerpt from OG Racings description. It sounds like the bracket was designed around the Sprint, so I would expect its going to get you considerably lower than stock if you're using a Sprint.

Planted's Low Profile Mazda Miata adapters are designed around the popular Sparco Sprint seat, but will work with similarly sized seats from all manufacturers. The side-mounting brackets are engineered to mount the seat as far back and as low as possible - perfect for taller drivers! Although not compatible with sliders, the brackets offer multiple mounting points to fine-tune the seating position. Planted Seat Brackets are constructed from 3/16" thick steel for superior strength, and finished with a durable black powder coat

Timing has never been my strong suit, you can ask my wife