The 1,2, & 3 ratios for the 200 are nearly the same as a low gear 904. Should work out great for you. But 2500 at 70? Seems kind of high to me but I could be wrong, been daily driving trucks for too long I guess.
Wow .. If this 200 can hold up to some mopar stroker pwr then I'm very interested.. with a .64 Od that's sick. And post likely better ET's at the strip b/c of optimal tranny gearing.. sowith my 4.10 gears and 28" tire this set up would be nice.