I keep seeing all these guys dragin their trucks in 4wd. Isnt that hard on 4wd components such as the transfer case and front axle? I always thought you weren't supposed to go over like 45 while in 4wd let alone 90+ at the track. Am I wrong? Isnt this as hard on stuff as I think? Also, doesnt 4wd eat up a lot of your top end power?