None had the 3550 from the factory.....May 7 2012 at 2:39 PM
from IP address 18.104.22.168
Response to Agreed
....just like no cars have the TKO 500/600 from the factory. The most common overdrive manual boxes were the T5, T45, 3650, and the T-56.
The 3550 was the older version of the current TKO 500/600 with a much lower torque capacity.
B2 Motorsports, LLC