DG and Cobra are obnoxiously loud, not neighbor/trail friendly.
If you can find a nice Supertrapp, I think you'd like being able to add or remove discs.
The newer systems guys are using are very expensive, but a nice old school exhaust can run just a little bit less.
I've got a complete 85 200X ST setup, but I paid 300$ so it wouldn't leave my hands for less than 400$; At that point, you may just grab yourself a new custom system.
Trike builds and parts are not cheap...
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country