Igino Cazzola

Order them with ~ twice the standard spring rate.

Which Type? (I use the Type Flex; the dampers work OK, but the springs are far too soft to be used on track)

On the 'ring; I think it's better to use the Reds.

Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) Front (N/mm) Rear (N/mm) OEM 245 210 4,4 3,8 43 37 Eibach 285 239 5,1 4,3 50 42 H&R 353 279 6,3 5,0 62 49 Hotchkis 265 186 4,7 3,3 46 33 Megan 300 250 5,4 4,5 53 44 Tanabe DF210 269 216 4,8 3,9 47 38 Tanabe GF210 342 262 6,1 4,7 60 46 Tanabe NF210 296 234 5,3 4,2 52 41 TEIN S-Tech 274 212 4,9 3,8 48 37 Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) Front (N/mm) Rear (N/mm) OEM 245 210 4,4 3,8 43 37 Hotchkis 265 186 4,7 3,3 46 33 Tanabe DF210 269 216 4,8 3,9 47 38 TEIN S-Tech 274 212 4,9 3,8 48 37 Eibach 285 239 5,1 4,3 50 42 Tanabe NF210 296 234 5,3 4,2 52 41 Megan 300 250 5,4 4,5 53 44 Tanabe GF210 342 262 6,1 4,7 60 46 H&R 353 279 6,3 5,0 62 49 Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) Front (N/mm) Rear (N/mm) Motion Ratio, both front and rear, is ~ 0.7

LSD: If you don't like it crunchy; you should use an LS-oil.

Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) OEM 245 210 4.4 3.8 Eibach 285 239 5.1 4.3 H&R 353 279 6.3 5.0 Hotchkis 265 186 4.7 3.3 Megan 300 250 5.4 4.5 Tanabe DF210 269 216 4.8 3.9 Tanabe GF210 342 262 6.1 4.7 Tanabe NF210 296 234 5.3 4.2 TEIN S-Tech 274 212 4.9 3.8 Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) OEM 245 210 4.4 3.8 Hotchkis 265 186 4.7 3.3 Tanabe DF210 269 216 4.8 3.9 TEIN S-Tech 274 212 4.9 3.8 Eibach 285 239 5.1 4.3 Tanabe NF210 296 234 5.3 4.2 Megan 300 250 5.4 4.5 Tanabe GF210 342 262 6.1 4.7 H&R 353 279 6.3 5.0 Make Front (lbs/in) Rear (lbs/in) Front (kp/mm) Rear (kp/mm) Motion Ratio, both front and rear, is ~ 0.7

What's your Wheel Arch -> Wheel Axle distance?

Don't read the manual (it confuses more then' helps).

http://bahamutcars.free.fr/workshop/IS_98-05/rm/rm684e/m_sa_0122.pdf

I bought my TEINs from Camskill.

Bigfoot

http://bahamutcars.free.fr/workshop/IS_98-05/rm/rm684e/m_ig_0005.pdf

I had a nasty brake judder on my IS, it was the inside face of the rear discs that had rusted. I replaced the discs; and the judder disappeared. My pedal is also spongy, but with no-name brake pads and brake fluid that could be 10 years old; I'm not that surprised.

Where can I get a pair of adjustable Caster Rods with Spherical Bearings?

http://www.ate.de/generator/www/com/en/ate/ate/themes/10_products/30_brake-fluids/productinfo_brake-fluids_en.html

Street or Track use?

What Spring Rates were the first generation of ISs shipped with?