I have fitted them to both engines.
The body's flange needs machining down circular to fit.
An A series drive dog will fit on the shaft. Drill thru both to fit the Mini's 3/16" drive pin.
An A+ drive dog will fit with the shaft bushed, the A+ drive pin is smaller diameter. And the A+ finger clamp works too.
Seriously though, their advance curve isn't ideal for a Mini and the plate needs mods to limit advance to 9-10 deg at dizzy.
Getting scarce too.
It's easier these days to fit an electronic module to a Lucas 25D, 29D, 43D or 45D dizzy.
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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.