Looked like a Ruttman from the CL photo, but now I'm not sure. Springer front end.
View attachment 74276
View attachment 74276
It's been cut on a bit. Well, brake bracket changed for use with a modern brake caliper. Plus an extra brake cable bracket added. But it does appear to be a LiL Indian. Check under the motor to see if there is a hole in the center of the motor mounting holes. That'll get you started on the vintage of bike you have.
Underside of motor plate. This will help tell the approximate year of the bike?
View attachment 74342
View attachment 74342
The 4 holes amonst the 4 slots appear to have been added. If there had been a single hole located somewhere near the middle of the 4 slots, it would have told you that it was a later issue LiL Indian frame. This not having the hole I'm talking about most likely makes it an earlier Briggs frame. By earlier I mean pre '68 I think it is. Somebody can correct me if I'm wrong but LiL Indian started using Tecumseh engines in late '68. So that should give you a start on what you have. If you dig around on here, you'll find various threads explaining all the different characteristics that can help put a year on it or get it closer.