Good? I think its a great kit. But you still need someone very competent to put it together. You need someone who can machine the cases right and timken the bottom end.
The kit itself is a quality product, the forgings and machining is A grade. I think the S&S heads are among the best around, triple valve springs and quality machining. Gear driven cams are a no brainer for 640 thou lift as are forged roller rockers and forged supports.
Be careful what exhaust you run, it will greatly affect performance. What do you have in mind??
Some photos of the kit:
http://s207.photobucket.com/albums/bb113/nautilus_shaz/Micks124SnS/
My bike ran 12.25 @108 mph with the screen on and the bags on, tools in the bags etc (street trim). We weighed 1050 lb on the weighbridge at scruiteneering. I cant hit her hard in first, she either spins or lifts the front wheel and I cant ride that well, so I feed the throttle in 1st and hit her hard once the clutch is out in second. At that stage I was running the canned map from S&S and since then we done some dyno time have picked up a bunch more torque in the mid range. Still have not got the top end right and she still wants more fuel in the mid range and the VE tables are maxxed out. Once I get some more $$ and some time we will go and chase the top end, but as a street engine it is fine. With some more dyno time there is a 11 second pass there in street trim which is the target.
To ride it is just fantastic. At 80mph in 6th you can just roll on some throttle and pull 110 in no time. Its a totally different cycle.
My bike is my daily ride, so I wanted big grunt every day and the SE kits that keep the flimsy stock crank, chain driven cams and tapered con rods just didnt impress.
I average around 38 mpg, best 43 when ridden real light with the HOG group and worst 34 when belted keeping up with mates on sport bikes. What more could you ask for?