Hello Lawndaddy [if that is your real name]
I would think there is little commonality between the Model 43 and Model 45.

Sir Chook's view is as relevant as ever.
I have not changed my view since this History Record: -

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/83401/MODEL_43_-_20"_POWER_.html

Please keep us informed.
The more Model 43s saved the better.
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Jack