Ken,
I have tried to keep my '69 BB as close to original looking as possible, but to be honest I got tired of the sound that you get from the current "off road" exhaust systems that are being produced today. It sounded like a two seater Impala, and it was just not getting it for me.
So, about 5 years ago I purchased a pair of Magnaflow mufflers from Corvette Central. Here is a current link.
http://www.corvettecentral.com/
I really like the sound of these mufflers and they come with the welded bracket for the stock rear muffler hanger. The only problem that I have had is that the left muffler does not sit correctly in the rear valance (not symetrical with the right side). I was going to take it somewhere and have it cut and welded, but never got around to it before the move. The price was not bad either, less than $200 for the pair.
I hope this helps.
Rich