As you know, I have Girodiscs, 2bular exhaust, Shorai battery and the usual lightening things done already. I am leaning towards the GT4 unit , but the track rat part of me likes the Greggs unit which is a GT4 type design on steroids....and adjustable I believe.
So far, these are the combinations I have put together starting with the most cost effective.
1. Hethelsport Fiberglass setup: Most Functional and cost effective
a. Sail Panel $509
b. Louvers $549 = $1058
c. GT4 Wing w/CHMSL $975 = $2033
2. Gregg's Race Parts (All basic CF): Would have to be 5++lbs lighter to consider, unless that wing is the one to have
a. Sail Panel $899
b. Louvers $899 = $1798
c. GRP Wing $749 = $2597
3. HethelSport CF Parts by WinAce Would have to be much better or lighter than Gregg's
a. Sail Panel $1099
b. Louvers $1099 = $2198
c. Wing GT4 $1850 = $4048
4. Techno CF (I have read questionable things about their UV coating quality) Gregg's
a. Dry Hatch w/CC $2199
b. Louvers w/CC $1399 = $3598
c. GRP Wing $749 = $4347
5. WinAce 410 TailGate in Fiberglass (Hethelsport)
a. Tailgate $2099
b. Sail Panel $509 = $2608 ??wing??
6. Win Ace 410 Tailgate, Sail in CF = $ 4748 ??wing??
a. Sail Panel $850 shipped
b. Louvers $735 =$1585
c. Wing TBD
I may just put a gurney flap on my wing
Now if the vendors can start giving us some weights etc, I hope this can help anyone that is starting to think about upgrading their S1. The first two options get the job done without lots of extra bling unless someone can show me how options 3,4 &6 are 10lbs lighter. The Winace tailgate in Fiberglass is probably not much lighter than the factory tailgate so that's a lot of money with little to gain. I am leaning towards option 1 or 2 depending on weights and the final wing look I want. It is not a bling show car. It is a track car and functionality wins any tiebreakers.
Keeping some money aside for another set of 19/20 wheels is on the table also as it appears our 18 rubber selection has diminished with the loss of the R888 275/40R18. Going to a 275/35R18, if one is to consider maintaining the rake only gives us a 225 front option as no 235/35R18 exists. No 18's can be carried forward to a newer Evora model anyway.