i did the singo cam 30 in my 32 drift car for a season, the torque was great fun but now buildin the thing from scratch with 26 head on it, will be even better.
i never had a problem with clearance issues running the standard 32 mounts. i did though have a custom inlet plenum with good ole XF throttle body. lol
and yes the 32 will have more traction than the 31.