I have a question about an old XT computer?

Ok people, I need the old timers who know DOS and the old 8088 Hardware to help me out on this one. What I need to do is pull 40 Megs of data from an old RLL drive and store it on my current system. The XT is running dos 6.22 the Parallel ports and Serial ports still work. The modem for it still works. I have thought about using the parallel cable and moving it that way, However there are incompatibilities between the software and interfaces. I don't have an 8 bit IDE controller to attach an IDE drive not that it would make a difference as the 8088 codec does not support it. So I need some solutions as to how I can move this data. I can’t do it with floppy as it only supports 360K format. I thought about going the route of the modem, but I don’t have enough space left on the drive to archive the data in to one file. So you’re seeing my problem here. Let me know what you can think of, I'm drawing blanks any more.