I've been using Sysinfo V3.23 to test the speeds
Don't trust SysInfo for any system information or benchmarks. The application is way too old to give any reliable results on modern systems.
I'd recommend
SysSpeed. Granted, it's not that fresh either, but at least it gives more reliable results for faster 030, 040 and 060 systems.
Sysinfo keeps telling me that the MMU is not in use even though it lists the CPU as a 68030.
68030 MMU is not in use by default. You need to run some application using the MMU before it is reported as being in use.