One of the problems of the V730, is that it is a HT740 without 1st gear. So startability is limited. If you have a 8V-71N with 65 injectors, then you have a 304hp with 800lb/ft torque engine. Figuring that your bus weighs in at 30,000lbs, that 1st gear is 1.77, that the torque converter multiplication is 2.5, that your rear end ratio is 4.125, that your 12R-22.5 tires are 485rpm, that works out to be a startability of 22%-which is alright so long as you don't get onto any 2 lane mountain roads. Last summer, we went over the Sierra Nevada on highway 4 which had a couple of 28% grades. With my 4.56 gearing, 31,000lbs, 11R-24.5 at 476 rpm, and 1125 lb/ft torque on my turbo'd and air to air intercooled 8V-71, my startability works out to be 32.5%-and we were down to 10mph on those short but steep switch backs. Just pointing out that too much gearing, and you may get stuck sometime. Good Luck, TomC