Me too, I think there will be a big difference (to say the least).
After doing some measuring, spring swapping, knuckle movement, and collar moving I corner weighted the car today, unfortunately I can't really figure a way to get it much better than this without the ride heights getting way out of wack.
This is where I sit in the stroke at rest now
This is full bump, seems like it clears to me everywhere but worst case one turn of the shock body can be exchanged for one turn of the spring collar while maintaining the same ride height at the track.
I've now got about 50mm / 2" of bump travel from rest ride height, which is more than double before.
This is me (180lb) and 1/3rd tank indicated. Cross is basically 50%
I would love to ditch the Radium surge tank, Radium fpr, and Radium fuel filter that lives in a box in the driver rear of the car, but I think I'm kind of screwed by having the Radium fuel basket in the tank, which I THINK?? requires a separate fuel pressure regulator. My guess is the stupid surge tank setup is at least 20lb itself and I've always hated the idea of having fuel anywhere inside the car.
Min competition weight as classed is 2871lb, so I can cut about 30lb out of the car and still make weight on an empty tank. Ideally, it'd be the surge tank that goes. Investigation needed.
Headed to Chuckwalla on 9/23 to get some testing in and hang out with my neighbor that does like one event every three years in his S2000. It's one of those Chuckwalla promoter days so it should be pretty stress free to make changes.