I'm running B&G's, I'm not sure if they're RS1's or RS2's but the more known RS2's have ratings of 448 up front and 334 in the back. I only have the rears on right now, I'm just barely tucking 16x7.5 wheels with a 37 offset. The tire is a 205/45. Right now, it's bouncy as hell.
But I have to mostly attribute that to the fact that I haven't put the fronts on yet and am running H&R's up there. The car looks like an airplane ready to take off. It's pretty comfortable if I only hit a bump on say, one of the back wheels. But if there is a small speedbump for example, and both wheels hit it it's pretty rough.
Spring diameter is 3 1/4 inches in the front, I can only assume it's the same on the rear.. What is that of the raceland or equivalent? I'm running a 37 offset on a 7.5 inch rim. Well, I was until I realized I had clearance issues. Back to stock wheels until I find a solution.
Since I'm doing the rear disk brake swap through your group buy, I'm hoping to use that as my 'spacer' to get the clearance I need.