Thanks all for your input. Some answers and clarifications:
My dealer (Manayunk Triumph) has an aftermarket cam he likes to install on 865s. I'm not sure who the maker is.
He noted that the big bore kit doesn't get much in the way of displacement (865 to 900 as someone noted) but he said the torque improvement is substantial and that's where you see the passing power improvement.
@mrt202 - use the $1800 as a down payment on a Thunderbird. Smart guy!
Snorkel removal...what's a snorkel? That's the level of mechanical ineptitude I'm dealing with here...DIY just not an option...I know my limitations...
