Anyone know if I can swap the stock(08) Acera E type mount front Der for FD-M771 top mount xt der? It looks like there is room but im not sure and am new to making mods like this to my bike. Should I use a top mount or bottom mount front der(will it make any difference? Also for the rear der any suggestions? Im already swapping the crank set with a fc-m770(xt 44-32-22) and the cassette with a cs-m770(xt 11-32) and new 9 spd chain. The rear der im considering is a m772-sgs(xt) which is a 45t top normal shadow. Does this sound like it will work for me? Thanks for any info