NedSn3,
Don't be afraid to examine that possibility. Enclosed are some pics of a C-25 (pre PBL) that came about just that way. I had a K-27 frame laying about, I built new tail pieces and made this #375. I believe it could be made to work. There might be some differences in the wheelbase. But it's your model and your railroad. And I can assure you that I'd never tell a soul.
JP Rons