Spending $18k to avoid voiding a factory warranty has to be some sort of record, at least to my knowledge. I wasn't aware the Harley kit was priced at $12k btw, more like $2595 MSRP per the Harley P&A website. The exhaust is $1299 chrome, $1399 black. What makes up the rest of that $12k for parts? As for labor, assuming a $100 per hour labor rate, $6k equals 60 hours labor. A competent person could build an entire bike in 60 hours. So I'm not exactly following what this dealer is doing for the $18K. 
You could have a good independent engine builder put together a much better package for one heck of a lot less money, and put the rest of the money in an account to be used for any powertrain repairs Harley refuses to cover. You really don't have to let Harley and it's dealers stick it where the sun don't shine if you don't want to.
JMHO - Jerry
Sorry if I mislead what the totals were for. I spent 12k in parts for more than just
Motor and exhaust.. I replaced quit a bit. Heated Grips, Polished rotors, chrome fork sliders, Garage door opener, complete chrome levers and clutch and brake res. Chrome Brembo calipers, complete chrome bolt kits for whole engine, Color Matched King TP, Saddle Bag Led lights, complete Spectra Glo lighting system for Stage II speakers and bike.. I did get the Stage IV 117 Kit and Full exhaust, that is what I can remember..
and the Labor was for everything installed.
I know they charge 23hrs for Stage IV and for Tuning. I think 2-3 hours for Exhaust.
I wish I knew how to install all of this. But I am limited in this area..
I realize this is expensive, but I don't hassle them to much, as I have clients try this with me from time to time because of my rate of $125hr for IT engineering services.. I did call a couple other dealers and they were about the same. Avg is $85-$100hr.
Hope that explains a little clearer on the purchase. I am learning the HD processes and to go to non dealers to work on your bike.
All the best,
Patrick
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