Gas Gas TXT pro 2010 rear brake caliper

[BenFranklin]

Seeking advice on the above subject. I need a new rear brake caliper for my Gas Gas TXT pro 2010. The caliper that I removed from the bike had an angled cut on the caliper hanger/carrier part of the caliper. I ordered a new one (part number 365019MO0), but when it came it didn't have the angled cut, even though on the website it was shown in the picture of the caliper. I've been in touch with the shop and they say that the part numbers match up with Gas Gas catalogue etc. Has anyone else had the same issue when trying to get a new rear caliper with the angled cut on the carrier/hanger part, and does anyone know if the caliper without the angled cut would fit the Gas Gas TXT pro 250 2010 without causing problems (everything else on the caliper matches the old one that came off the bike). I was thinking that maybe the angled cut caliper was an older standard model which fits both the Gas Gas and other bikes, and maybe the version without the angled cut is a new standard model that still fits the Gas Gas but maybe not other bikes. Any advice would be greatly appreciated.