I bought a used Penske for my VFR from a friend who ran it in his 2002 VFR. He states that it has an 1100 pound spring, but the guy weighs about 230 pounds.
Anyway I installed it and with the preload collar turned all the way to the top, I am only getting about 20 mm of sag, (I weigh 183 pound in street clothes). I am thinking this thing has a heavier spring than what he said.
Will try riding it a bit when weather permits to see how it feels, but I am thinking I will be re-springing it before the Texas Mac.