105 super dish uses 2 dishpro dual lnbfs, one with the plastic dual casing and one without, the fss lnbf on it can be one of three diferent types from what Ive seen down here in the gulf coast so far. It is very possible that the 1000 will replace the 500 down the road with 2 variations on the W bracket having the dual positioned on either side of the 110 and 119 lnbfs. As it stands the 1000 is not interchangeable with the 500 except in the use of the lnbf's, all the hardware on the 1000 is larger.