Only downside to the true center diff on the revo is in most cases they force you to run with the truggies. The Monster trucks class usually requires a transmision of some sort.
thats i have center diff hidden inside tranny. none would expect diff in maxx trany :)
Radek
V4 D8 - RX8, XERUN 4168SD
F1-09 - Tekin RS Pro, 17.5t Redline, 2S LiPo
Sakura Zero S - LRP, Saturn 20T, 2S LiPo
*EX-10 Eurus*