In the states.........nobody that I know of. Calmini will only make them when 10 people give them credit cards (preorder). And they are a pain in the ass. They've been showing parts on their website that they don't even carry for 6-7 years now.
http://www.puresuzuki.com/suzukimain.htmRocky Road Outfitters has told me it's gonna be a while, as they are swamped with more orders for various products than they can handle.
http://www.rocky-road.com/sidekick.htmlMany of us are in the same boat as you. Here are a couple of ideas. Shrockworks has a Tracker/Sidekick bumper that can (supposedly) be modified to fit. I would definitely call them and find out who has modified it, and what brackets they used/how hard it was, etc. Please share the info if you do call them! We're all curious.
http://www.shrockworks.com/SuzukiHere is a site in the UK that makes a bumper, although it would be a little pricey with shipping. Also, I don't know if the fitment would be the same for left-hand drive v.s. right hand drive vehicles.
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I'm assuming it might be.
http://www.rhinorays.co.uk/index.htmDEFINITELY email these companies and let them know you are interested in a Grand Vitara bumper. Remember that "the squeeky wheel gets the grease," and many of us have been riding their asses for years now, hoping they will build bumpers. Contact Calmini, Rocky Road, ARB USA, Shrockworks, etc.
I contacted this company in Canada, and they told me they might be manufacturing some bumpers in the next year. Drop 'em an email. Maybe it'll happen faster!
http://www.masterkit1.com/The only other option right now is fabrication.
Good luck!! Keep us posted!