8 1/4 rear end 2.45 gears!

just built an 8.25 for my 66 from a 74 dart. it had 2.45's, just remember the carrier is special to 2.21's and 2.45's. 2.74's and up have a different carrier, the ring gear is approx 7mm farther left of center compared to the 2.74 and up carrier. also, theres 2 different carrier bearing sizes. if you swap out the gears and carrier pay attention to that. just went through that headache. not fun.