5.9 Magnum 5-speed In an early A??

I have been running the 3.09 low since around 2004, and I love it. It's perfect for sbms on the street, with just about any cam, but especially with mild to moderate cams up to say 230* @050.
This makes the ratios 3.09-1.92-1.40-1.00 and the splits .62-.73-.71. My small cam 367 easily pulls the 1-2 split with 3.55s,even short-shifting;and then things are normal.