ORIGINAL: lala6
unless you have a part # A Main isn't much good to me, they tell me to contact HPI maybe they can help with a taller mount.
It might seem odd, but... It seems like OFNA and HPI share alot of similar specs. Try getting some RTR OFNA motor mounts. They are universal as far as engines go. Just check your specs on the hellfire chassis motor mount holes vs. ofna's.