Wow - learn something new every day. I picked up the L-2A a few years ago at the Chicago O-scale meet. It is beautifully painted with extra details, far beyond the standard US Hobbies level. Also has large Pittman can motor. Surprisingly, it is Road # 2726.
I don't know Tom Harley, but could it have been his engine? I have some friends in NYCSHS and they weren't aware of any L2s with Scullins. That's why I thought it was wrong. If I can confirm 2726 had Scullins, (photo anyone?) I would be delighted to leave it alone!
Thanks, John