Have a look at Ilford SFX and the deep red filter to go with it. Very easy to use and can be developed using conventional B&W chemicals. Using this stuff means that IR frame counters (if present) wouldn't make much difference as unless you add the filter it behaves like conventional B&W film.
Only snag is the long exposure times - anything from four seconds to a minute! I find metering without the filter, then adding the filter, knocking seven stops off the shutter speed and using a cable release works well.