Sounds about right. My ‘67 140 with the 160hp engine, wheel pants, gap seals and vortex generators will see a consistent 105kts at 2450 RPM down low (2500msl), bit faster with cold temperatures, bit slower if it’s hot. Higher up, say, 5000-6000msl at 2500-2550RPM I’ll see 110-115kts, again...