DSII Ideas for Bugs

I happened upon a whole mess load of epic scale tyranid models that I want to
use in DSII. The big bugs have giant claws that would easily be able to rip
through a tank, but I'm not sure how to incorporate this into the existing
DSII rules (unless I'm missing something). I was thinking of
giving them an extra DFFG-1 or 2, maybe a multi-barrell 1 to keep the
range really short, to approximate the effect of the claws lashing out at a
close vehicle, and an APFC for the effect vs troops. What do you think? Any
other ideas?

I also have a bunch of Ork tanks with crazy claws and giant rollers and
such... I figured an APFC on those would approximate their effects vs. troops.
Sound about right?

Thanks.

Fred the rules I wrote for using bugs in DSII are on my website, this page
specifically:

http://www.germy.co.uk/wargaming.htm

Hopefully they might give you some ideas if you see how I thought they might
work.

Jeremey