loads of info on this forum, take a read of the site - syncronauts pages are top right link, and search for landrover you'll find several long discussions on relative merits etc..there's also the brickyard forum where some syncro peeps hang out too including the biggest thread on a modded 16" camper you'll find.
but no it's not like landrovers where everyone and their aunty sell bits of metal to fix the weaknesses and protect them from damage, or mod them for specific purposes there's a limit to what you can mod and how far you can go cos they are independent suspension not solid axle, and forward control and rear engine limits what you can do to improve approach and departure angles. But anything is possible if you've deep pockets or mechanical skills, check out Russell's much modded and improved vehicles (
http://www.syncro-nutz.co.uk" onclick="window.open(this.href);return false;), also see SyncroServices web site for parts and inspiration and Yaeger's too both have an english version. CJ at Syncrospares.co.uk will guide you on vehicle availability, he's some interesting vehicles for sale in this country, obtaining from europe is pretty expensive now.
Come along to an event to see how they go in the field, the landrover boys are always suprised by where we go and what we do, and hate the fact that we can brew up and sleep in our vans in comfort. But you will not be able to make a winch challenge type truck out of a syncro, if that's the thing then get a jeep and mod it, but these make perfect green laning vehicles, gearing is suitable, no faffing in and out of low range or 4wd mode.
Running a landrover would probably be cheaper but a syncro will be a LOT nicer to be in and more versatile imho.
16" are rare, and limited inprovement in ground clearance, braking, you could mod a 14" to do what you want without the worry of more expensive and rarer bits.
Parts availability is limited but CJ usually has everything you need and Simon Baxter at Brickwerks has sources for most things new too.
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cheers dude