I found this, but it is for the 2007 & 2008. Here's the website,
ODI - Office of Defects Investigation
Make : FORDModel : MUSTANGYear : 2007Manufacturer : FORD MOTOR COMPANY Service Bulletin Number : TSB-08-9-6Date of Bulletin : OCT 23, 2008NHTSA Item Number : 10026386 Component : POWER TRAIN:MANUAL TRANSMISSIONSummary :
http://www-odi.nhtsa.dot.gov/images/spacer.gif FORD: 4.6L WITH TR3650 MANUAL TRANSMISSION; CLASH OR RASPY FEEL; SHIFTING INTO 2ND AND/OR 3RD GEAR. CONDITION MAY BE MORE PRONOUNCED WHEN THE TRANSMISSION IS COLDER THAN 40 DEGREES F (5 DEGREES C). *PE
__________________
2008 Mustang GT Premium 5 speed, 3.55 gears, black-on-black, IUP, 18in polished aluminum wheels, FRPP GTA Axle Backs, JLT II CAI w/SCT X-Cal 2. 296HP & 311TQ
"Some people live their entire lifetime and wonder if they ever made a difference to the world. Marines don't have that problem." -- Ronald Reagan