This subject came right on time, Let me tell you guys about my experience
I bought the Complete LED package after contacting Will (also got the 3 emblems with them but unfortunately only got the LEDs, had to contact KK and wait about 5 days to get a response and they said they'll ship them right away to Kuwait not something I look forward to as it'll take a long time, instead of using my US forwarding box, but let's see how long this will take, as of writing this I haven't received a tracking number)
So we discussed about the hyperflash and wither or not I should get the harness, I agreed that I wouldn't need it, when the package got here I could only fit the Reverse Lights, the Trunk lights and the License plate, also the front Map lights, Reverse were Alright, not as a bright as It was pictured on KK but it does the job, trunk is really low and I had to replace it with the halogen one, license plate are alright but not bright enough (I bought stage 1 as I've read in the forums that stage 2 would not fit)
Coming to the rear lights, They would not fit, apparently the cadenza halogen lights are not matching the one I got, they are the same size but the lock mechanism is different, I could fit it with a bit of twist and push but one side was not locked on which is not something I want put in my car specially after paying $250 for the whole set.
Front vanity light did not work as they were a little shorter, The car had a bigger ones, map light fitted nicely in the front but not the back, I tried removing the housing and still wouldn't work at all, so I had to remove the front ones to have a warm light all over the car instead of white in the front and warm white in the back.
Glove box did not work either, I'm not sure what happened, I even took the car to the Kia dealer and they told me they aren't the same type. So All I fitted into the car now are the Reverse lights and the license plate lights which I recommend getting something brighter as even at night I wanted to go for the bright but not too bright look but these weren't that good.
I've tried contacting them specially after they asked for my address to ship the K 3.0 logos and attached the pictures of the housing but unfortunately no answer.
I'm starting to dislike the cadenza now, even thinking of swapping it with an R32, I'd rather have a car with a lot of support rather than being under KIA (OH we have a different halogen design because we don't want you to change the lights with anything other than OEM) and KK mercy (we're so busy we got your money and screwed up your order, contact us and we're gonna ignore you) specially on things like LED lights.
oh and I got 2 1156, instead of 1156 and 1157 like the website stated, I have a business and I never screw my customers at all even if I knew the customer is sometimes at fault because I shop elsewhere and I like to be treated fairly. beware guys, I don't care about the 250 bucks and I don't mind not getting them back I've spent money on useless **** before and this is ain't better.