There are other options but no one really uses them any more. The TKO 3550 is worthless. 1st gear is too low and 5 gear is way too high. You might as well have a 3 speed because that is essentially what you have.
Richmond, and Jerico make transmissions as well, but Tremec has really sewn up the market.
We are happy with the TKO600. Very happy. The top loader has just gone the way of the dinosaurs. David Kee makes a GREAT tranny, but technology marches on.
David
