I can only speak on my own experiences, and I didn't use any of these vendors, but it looks like britishcustoms has the same headwork for $900, plus cost of valves

http://www.british-customs.com/british-customs-cylinder-head-update.html

bonnevilleperformance does the same with valves for $1500

http://bonnevilleperformance.com/HIPERFHEAD.htm


cams for $700, although I don't know much about them

http://www.british-customs.com/stage-i-street-cams.html

TP USA has the head work with +2mm intake valves for $985 and also the high compression pistons for your 865 WITH cams for another $970 looking at just under 2 grand for everything you're looking to get without actually boring your cylinders. Honestly, this would be the way I would go if I was looking to do it. Don't let things like "stripped and cleaned" and "rebuild" make it sound like Thunderbike will do anything more than any other shop, it's pretty standard practice, and they will all do that. 5 angle valve job is better than 3 angle.
http://www.triumphperformanceusa.com/ind...products_id=393
http://www.triumphperformanceusa.com/ind...;products_id=39

I think the product cost will outweigh the shipping savings personally, and you could get more for your money from Triumph Performance USA

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