Purist describes me to a 'T'.
Anyway, a 44 HP bike can be plenty fast if you get rid of everything you don't need.
For their day the Indians were pretty decent motorcycles. You didn't need to be able to do sustained 85mph for hours...even though IIRC the transcontinental speed record was set by two brothers riding an Indian in the 40's.
FWIW, I think Harley died in 1984.5 (?) when they went to the blockhead and Porsche died in 1998 when they went to the wasserpumper. That's why I'm building a Shovelhead and drive a '81 911.
As for your bike being an "Indian"--yes, the names are all there. But "Indians" were *alternatives* to Harleys, not Harleys with flared fenders. Is that an Evo-type motor I see there...? They were on the right track with the PowerPlus motor but I'm not certain it was all that different.
Polaris/Victory had the right idea. They took the the V-twin platform and said, "Let's make it better across the board". Their softail-style frame handles much better than any equivalent size/weight HD, the motor is better, the tranny shifts better, the brakes are better and (IMHO) their first gen model even looked better (I know, many disagree with that notion).