The download contains all the original panel and sound files and the conversion is based on Manfred Jahn's original source files. There are nine texture sets showing the aircraft in a number of scheme it carried though its career; texture sets included from the original release have been reworked for PBR and some minor modifications made. The original authors are acknowledged in the aircraft.cfg entries. All such alterations are derived from the original paint kit and texture files by Manfred Jahn, supplied with the original release.
Aside from the necessary alterations to the texturing properties, no other alterations have been made to the .mdl files. All the panel gauges (save for a minor correction to the monitor) and graphics are entirely original and the original read me file specifies the sources and acknowledges the authors.