While im just going for the biggest thing i can shoehorn under those rims and work it out afterwards.
The beauty of the Wilwood caliper is a new crossover and thickerspacer is only needed, you dont need make up spacers with orings etc like the mazda caliper.
Most of the sub 1:17 guys at Mallala run a thicker rotor and decent pads usually hawks ht10 and decent fluid gs610 or ap600-660 plus ducting.
Even with my car going from a 1:26 to a 1:23 has caused brake fade after 3 laps, I have gone a thicker rotor up 3mm, better pads and trying some ducting, hoping with the new setup a low 20 is on the cards.
While im just going for the biggest thing i can shoehorn under those rims and work it out afterwards.
IPRA has the provision for running 50 profile. Ill run either 205/50/15 or 195/50/15
Pre 2006. I think it came in in 2007 because i remember kicking myself that i had sold off all my 15s in 2005/6.
Just use the website, ive given up on the paper manuals.
Engine - MR2 4AGZE bottom end, smallport head, TRD 0.8 gasket, S14 T28bb turbo
Power - 120Kw at the wheels
Brakes - F: FC 4 pot w/ Ferodo DS2500, R: Project Mu
Suspension - F: 480lb coilover, TRD yellows, whiteline Adj, RCA, Cusco caber tops
R: T3 4 link, one standard top link, driver side, TRD Blue 8 way, 200lb spings, traction brackets, whiteline ajd
Diff - 4.3, TRD 2 way T18 (coverted to disc)
GBox - T50
Tires & Rims - F:15x7+0 Konig Rewinds R888 195/50R15 R: SSR mesh 15x7.5+7 R888 205/50R15
Body - stripped road. Cusco 7 point cage
1:23.59 measured with AIM timing System