you should, and since you are from new england, i highly suggest NESVTOA in Ayer, MA. Although the courses are fairly open (most of the guys have mustangs and lightnings), its a blast. I have only auto crossed with them, so i dont know anything different. But everyone that has done this and SCCA events will tell you these are much more fun. I can imagine this is true, a course thats over a mile spanned on 3 runways, with lap times well over 130 seconds, compared to parking lot course with 40 second laps.
Jeff
