The Runco CRT's are very high quality projectors. Runco takes a proven and well designed existing chassis, and then performs certain modifications to any weak points.
Many people in this particular forum don't believe the premium for a modified CRT is worth-while. Then again, in this forum for many... it's all about doing the tweaks yourself.
If you don't want to add/replace various resisters and/or capacitors to your projector or add color correction filters, Runco CRT's usually have this done already. There are a myriad of other modifications which vary from model to model, and can include other things such as electronic menu modifications to enhance setups.
Sorry I can't speak directly to the model you mention, but some research and someone here more familiar with that model should be able to better inform you.