Hi, and Welcome Kimtbo!
Not sure how much of the kitchen you want to redo, but this may help. You can find the commercial-made parts online or at some local RV stores, like the sink, faucets, range, microwave, and fridge. You can also go to the big box lumber stores for specific items if they apply/fit.
RV Kitchen sinks, here are two places as a start; there are many more out there. A standard home-style faucet will fit the hole patterns.
For the stove, microwave, and fridge, tell us some about what you are after; they can get costly, pending your wants and budget.
Now to the cabinets and countertops, these were all custom-made by Sunline and still are by other RV manufacturers, so finding lightweight RV-style cabinets will be more complex. I have made them myself, and they are built differently than a home-style cabinet you buy at the lumber yard. While the fronts look the same, the framework is all different. RV cabinets are built into the camper; they are not free-standing, with sides and backs to them. They are more of a framework. This is all to save weight.
New cabinets are very doable if you can access someone who does woodworking at a reasonable cost. Just make sure they are not built heavy, or you will lose a lot of cargo capacity and can overload the camper. If the camper never moves, like on a seasonal site, then the weight is not as much of a concern. If you still have your old cabinets, have your woodworker look at how they are built; he can, for sure, reproduce them in whatever style your want.
I hope this gets you started. Ask away for more.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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