Steering, Wheels, Column, etc

So Barnaby arrived with an early wheel (like the one pictured above)  that is almost certainly not original.  based on the info I've found online, its hub should not be compatible with the '68 '69' steering shaft. (the hub on this wheel fits the shaft, and the shaft - apparently - is correct for the car.) 

***  Turns out this info was wrong and the earliest cars had the same shaft diameter and spline count as the '68-69.  ****  

Regardless, the wheel is pretty beat up, and I am fond of the banjo-spoke type (below) particular to the 68/69 mode years.

 The splined and threaded portions of the steering shaft vary by year, apparently as follows:

Steering column splines for both MGB and Midgets: 
58-61

spline 5/8 by 36 splines 

62-67 
spline 3/4 by 48 splines 
thread 11/16 X 27 TPI 

68-69 
spline 5/8 by 36 splines 
thread 9/16 X 27 TPI 

70-80 
spline 11/16 by 36 splines 
thread 9/16 X 18 TPI

And here are the column switches 

Notice below, same switch, two different stalk lengths.  

Unfortunately, The cowl and column switches were disassembled when I bought the car and the right hand side of the cowl is missing.