diff cases and cups

[tallyram]

i've got a pair of rd logics aluminum diff cases and a pair of integy aluminum diff cups to go in my g2r. should i wait until i roast the stock diffs or should i go ahead and throw them in now? i'm running a 1950/8turn on 6s 20c lipo. the reason for asking is that the truck is almost fully assembled with blue locktite. i don't really feel like tearing it down unless these parts will make a nice difference. thanks, carl.