I do rod bearing swaps on the 01-02 M Rdstrs all the time, and from a pure access standpoint, the Healey would be absolutely wonderful to work on, with nothing in the way to remove the sump.
Doing your Healey's rod bearings would be very easy to do, and the mains only a bit more trouble. You should be prepared though, in the event you find a crankpin or main journal scored, as that condemns the job to crank out status.
Which would you rather do...
... 02 M Rdstr with the entire front suspension and xmbr dangling...

... or this nice Healey?

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57 Healey BN6L-942 Wine Red
61 McCulloch R1 Yellow
99 BMW M Rdstr Cosmos Black (formerly supercharged)
01 BMW M Rdstr Steel Gray
08 BMW 535xi Monaco Blue Metalic