ok ion my car now i have a 9bolt with 2.77's but its disc brakes

on my wrecked camaro i have a 10bolt that used to have 3.08 2-series gears in it. with drum brakes.

first question. is it easy to swap my disc's to my drum axle if i decide to go with the 10bolt?

second question. the 10bolt has been gutted of all its gear and carrier. would it be easier now to lay in a 3-series carrier and gear such as a 3.73?

third question. should i keep my 9bolt and hope to somewhere find a 3.45 ratio with 3-series carrier, or swap to my less sturdy 10bolt that has lots of aftermarket support?


thanks!