Dave ,
I have not ordered an Ultimate yet - moving business costs are killing me . Same goes for the tbrake . They will have to wait .
I will say this . My old 440ci had peak tq right at 4000rpm . I went from a 4200 stall to a 5000 stall and the car picked up over a 1/10th .
I am still running that same converter it has only gained 1-200 rpm stall
I do run a 4.1 gear with 29"street tyre , 28"pro bracket radial when racing .
The car is a dream to drive on the street , idles around @950 . Only know its a big stall if you nail it at low speed in top gear even then not too bad

Tex