3.45s are out of the BA to suit the 5 speed
Whatever model (BA Mk2?) came out with the t56 first still had the 3.45's though
I read that somewhere on here, keith prob wrote it, he's a bit of a manual eggspurt I believe
First Typhoons/F6's were all auto IIRC
By the time F6 manual available, ratios had changed to 3.73, hence keith's comment