Thanks to ya'll for the welcome. Yeah FX4, been a Mark Martin fan since he used to drive the old Folger's T-Bird. Hate that this is his last year, but at least he's gonna run trucks next year, hope he smokes that chipmunk- looking Todd Bodine and them damn Toyotas! Just got my '06 F150 back from service, guess the driveline vibration ain't been solved yet at Ford, cause they had to put in a shim kit and index the driveshaft, whatever the hell that means! Seems to be smoother, but still a little vibration at 55-60. The mechanic says Ford's still tweaking it and hopefully will come up with a permanent fix, says the stiff *** frame has a lot to do with it, that's probably why some of ya'll get that bed shake. Hey johntucker, would send some pics but ain't nobody showed this old man how to do it!! Little help out there, how about? Mine's a R/C XLT 2WD ( this old fart's 4WD days are over, gave the Bronco to my boy), got the 4.6 w/ 3.55 limited slip, trailer tow, fog lights, swapped out the 17's for the 18'' Lariat wheels with BFG's. Hey 73mach1, sharp *** truck you got!!