I've had one frontosa with a jardini before in a 100~ gallon tank a few years ago. They didn't bug each other when they were small. But when they both matured, the Jardini was just chasing him every chance he got and showed quite a bit of aggression.
Never tried it with an asian aro, but they should be tamer than a Jard. I am actually keeping a Panda SR with a frontosa (small 2-3 inches) at the moment. Been watching them for 3 days now, and they don't bug each other at all.
Frontosas also like caves and such, so you have a better chance at it if you build some caves out of driftwoods and what not. To be quite honest though, it'll be hard to keep them together for you since your aro is already relatively big.
Just my 2 cents. If you ever try it, I urge you to keep a close eye on your frontosa if you want him to live.