While I was in the shop earlier this week to pick up my bike, I discussed the 904 big bore kit. They (D & D Cycles, Inc.) do their own using the Wiseco pistons but re-bore and nickel the cylinders (no dissimilar metal sleeves). They also have designed their own high compression pistons if you want a little more hp. The service manger said that to get the most out of the big bore kit with an 865 you need to install the 790 cams. I'm still deliberating about the future larger twin cruiser. If I stay with my 790 America I will definietly have them do the 904 kit, but not sure whether to go with the 10.5 Wiseco or their 12.0 pistons. You would need to burn premium and I'm not sure if there are other negative aspects. After all, I'm not racing the bike, but I do want more torque and hp.
As far as the way the cylinders are bored, they have done quite a few of them including all their own racing bikes. The owner's son is sponsered by them and Brent's company (NewSpeedmaster.com) and is probably the top Truxton Cup racer at this point. His name is Rob McLendon - look him up in some of your past Triumph (Torque) and other motorcycle mags.
I do respect their opinion and am greatful to have such a great service dealer. If I redo the bike, I'll get them to do the work. They also suggested I go with the adjustable needles they use on their racing bikes. I'm for letting them do the works, test it out on their dyno, and ride off with a HD killer.
