3.91s in my 340 now!

I love that concept! I've been teasing the idea of a t5 in place of the full crash box in my 33 straight eight. Fifth gear would be a huge help with the mid-high 4 series gears in it. ( i can't remember offhand the exact ratio. 4.5x or lower)
It will make the 4.11s into 2.79s.