Perhaps "terrible" is a touch too strong a description for the stock GNS430 in FSX, but with severe limitations such as a pilot unable to move through the flight plan and select a waypoint down the plan to fly direct to that point, unable to save flight plans, and approaches being limited to those in FSX's default database, as well as too many others to list, that GPS is not even close to the real world unit. It is simply a glorified DME/moving map.

For the repaint offers here, are you only able to repaint to X-Plane or do you do FSX, too? Here is N2845W, a V35B with tip tanks that I fly:
http://is.gd/0Hns3J
The unique aspect that would make a repaint match the real world aircraft would be the TKS panels on the leading edges of the wings and ruddervators (just greyish bars across the leading edges). I have even more pictures should someone with much more talent than I have feel like such a project.