Where to fing gears for 741 case?

Talked to the guys from Randys today, great guys! After discussing it i went with a new 489 case from them, good quality piece so now i can run my 411's, also purchased from Randys, with installation kit, all bearings and seals, that along with my Detroit locker on the way from Summit and now ill have a rear that can handle anything, my axles are good for now, ill consider changing em when i start to put down more power, prob next year, this setup is really gonna wake her up, welds on the way too, im psyched