Thank you. None of those packs had what I wanted, but they set me searching and I found AT6D, T6G and Texan, all as vcpmod files. I renamed them as evpmod and they didn't seem to mind, and all work ok. I had hoped that I'd be able to use the appropriate atc_type and atc_model in the different paint schemes within the aircraft.cfg, but it only seems to accept a single entry in the General section. Never mind - I can edit before a flight if I feel the need.
Thanks again
David