Graco 4900 HVLP unit
 

I just bought a Graco 4900 pro-comp that is a year old and never had paint run through it. It looks like this unit is designed for uses a remote can so the gun can be held at any angle. Few of questions if anyone can help.
1. Can this gun be changed to use a pressurized cup instead of the remote can?
2. I have an old pressurized cup but is is not off of a Graco nor HVLP gun. Can it be used or is the cup specific for HVLP units.
3. If it can be converted to a pressurized cup can I get a top mount gravity feed cup? Does it need to be pressurized?
4. Does anyone have an opinion on which style cup sprays better, the top mount or bottom mount?

thanks......

http://wwwd.graco.com/Distributors/DLibrary.nsf/Files/309907/$file/309907R.pdf
This model does offer that capability. Part numbers should be in the owners manual link above.