LarryK's post got me thinking. I've been wanting to pull the 8.6 out and do a complete rebuild but I've also been thinking of an SS swap. If I'm going to spend the time and money

ErikSS wrote:Just to clarify, you're looking to buy a TBSS 9.5" 14 bolt rear axle, right?
larryk wrote:No driveshaft change is needed.....but you MUST convert the U-joint to a "conversion" one. There is a NAPA number floating around the forums if you search for it.... Otherwise, its a complete plug and play. Except for geting the PCM reprogrammed for the different gear ratio, on a 2004 4.2 is a NIGHTMARE