yes... it works great with propane.
yes it will or natural gas
Honeywell does not provide us with that info. http://s3.supplyhouse.com/manuals/1253196590775/17603_PROD_FILE.pdf
Yes, this igniter should work on your furnace. It comes with different mounting brackets and a furnace reference guide.
yes it will
There's not enough information in the question to really be able to answer fully, however the Honeywell Glowfly hot surface igniter comes with several brackets so that it's adaptable to a wide range of different furnaces and mounting configurations.
There is a 3 year warranty on this unit.