Hey JJ,
I have installed ZX14 forks on my C14. They've been on for about a year now. I couldn't get the front end to feel the way I wanted it to with out being able to adjust the compression damping so off to E-bay I went.
Yes they are a bolt on replacement ( kind of). From axle center to the top of the fork cap the ZX forks are about 4mm longer than the C14 forks. It wasn't a problem because they will slide up in the triple clamp under the handle bar risers far enough to allow for the difference in length.
Here is the "kind of". The ZX14 weighs about 120 pounds less than the C14. The C14 comes with 1.2 kg springs and the ZX14 comes with .95kg springs.
I contacted Traxxion Dynamics and they got on their computer and did some "computing" for me regarding whether or not the ZX14 stock damping rates would work with the heavier springs I would have to install to use the forks on the C14. Turns out the stock damping rates and range of adjustment would work for what I wanted to do. This may vary depending on how much you weigh.
I opted for 1.15kg springs for the ZX14 forks that I installed and I am very happy with the results. Much improved front end feel and ride quality.
I run a 180/55 Michelin PR2 on the rear and a Pilot Power 2CT on the front. The 2CT was an experiment because I was going through 2 rears to 1 front and thought if I put a more sport oriented tire on the front I would get better grip and possibly use it up at about the same rate as the rear. Turns out this is working out better than I had anticipated. I've got 7200 miles on them now and just got back from a trip to Colorado and back to Ohio and they have plenty more in them with minimal flat spotting from the slab home.
The other thing I noticed with the 2CT is better front end feel (planted and finishes corners better when accelerating out) and better slow speed steering. Because the 2CT is a little more triangulated than the PR2 the bike is a little twitchy at speeds upwards of 100mph or so but it isn't a deal breaker.
I only mentioned the tire choices for me because I'm picky about how my bikes handle and I usually spend my money there before anywhere else. Didn't want this to be another tire thread!!!
So far the shocks have done everything I've needed them to do.
Dean