I know you got it in America, but over here that's a Hong Nor X1 CR. Spares and such can be had from quite a few places, such as Modelsport and JE Models. Engine looks to be a rebadged Force 26, the same one that Hot Bodies put in the Lightning Stadium Pro and Sport. As for servos, depends on your budget. If you want the best of the best and not really bothered about spending alot, go for an XP Digital DS1015 for steering and DS1313 for throttle/brake. However these, as well as the Power HD servos are digital and you'll need a 2.4Ghz radio system. Again if you want good stuff, go for Spektrum, there's quite a range, I recommend the DX3C. As for the engine cutting out when you remove your glow igniter, it could be that the plug is too cold and you need a hotter one, I've never had a problem with the OS #8. Oh and your first picture shows the engine without an air filter fitted. If you don't have one, please purchase an air filter, running your engine without one is a sure way to quickly kill your engine, again there's quite a range, if you need advice on which one to purchase, just ask. If you still use the 4 AA batteries for the receiver then another recommended upgrade is a rechargeable 6v battery pack, this is especially essential if you wish to upgrade your servos. As for the bodyshell, Modelsport sell a clear replacement that you have to paint yourself, no stock at the moment but they'll be happy to back order it for you.