Ares,
You might also check with,
http://www.offroadtuff.com/
They are a sponsor for our Rover club, SCLR, and have always been very competive.
Which wires are you getting, I hope the 8mm.'s. That is what most of my friend and I run. Also, if you want a little more punch from them use Bosh Platiumn Plus 4's. They tend tend give more low end torques over regular plugs.
Good luck,
Mike J.