As stated above, a tad bit higher compression, but will throw the timing out a little bit. You have adjustable cam gears though so that shouldn't be a problem.

Something I would consider is replacing the crank and rod bearings with something like ACL race bearings that can handle higher RPM. I'm not sure if the B20 stock ones are made to take high RPM abuse?

They are only around $150 and will save you huge headaches later.