the fact that budders does not have a tail pipe make a huge difference in how loud it will be. the exhaust you described should not be very loud at all
Actually, I do have a tailpipe now, and it's still loud. Sorry, I guess I forgot to mention that. I also have a lot of porting/polishing, TRD mid range cam and bigger valves now too - but that was all done after I got my exhaust figured out and didn't seam to make much difference in noise.
I guess when it really comes down to it, loud for some people is not loud for others. I drive a lot of "stock" toyotas at the dealership I work at, so this is what I have to compare it to.