However, with the added weight you won't even loose 1/10 of a second.
It all really depends on whether you want the ability to easily swap gear ratios. If you want to drive around town with a highway gear, but drop in a race gear before you head to the track, then go for the 8 3/4. If not, go with the Dana. If it was me, for the same price, I'd go Dana. You're only puting in a mild 408 now, but who knows about later.
