The only reference I can see to the red-white spring is in the 1997 Race manuals, it's on one page, and the spring with the same specs is listed as pink-white. I see it's listed in the 1996 Race Manuals, and says "NEW Pink-White OLD Red-White", so I dare say it's the same. Should be 230-380 lbs load.
Where I sled: Gaylord, Irons, Cadillac, and DA UP AYE.
The old pink and white was a 230-380 spring. The red and white is the new 230-380 spring and the correct part number is 414-991-400. So according to the racing manual you definitely have the correct spring. Now the pink and white spring wire dia. is as follows: 5.94mm, 0.234 in. free length is 128mm and 5.0 in. The red and white spring is as follows: Spring wire dia, 5.72mm, 0.225 in. free length is 134mm and 5.3 in. Pretty darn close.
Why Jonny Ringo! You look as though somebody just walked over your grave.