is there any bigbore pipes left

FTZ super fat in frame pipes are hand rolled so they are a lot stronger than stamped. They are not bad priced either at $280 but unchromed and fat super short silencer runs $70. I've bought a rebuilt ported honda odyssey motor from ftz racing and was happy with the motor and service.
 
I've had good luck with Toomey's their staff is very polite and helpful over the phone and they give a good amount more than any fmf on top. Im told LRD and dyno ports are a good one too. I would imagine you could have the dyno port sent out to get acid diped for a chrome job and have it be a stealth bbk pipe to blend in. check the link for proof
Toomey Racing USA - Blaster Final Comparison