I used to run boxxers on my B17 no worries. I would probably get something 6 or 7 inch though. I wouldnt go as far as 8 inches. The same frame was also on the FRS DH I believe, which had 6" dual crowns.
Ok thanks are my current forks better than the jr T's then thanks
Keep what you have, a JR T is a back step.
Heres a B17 with Jr Ts by the way