[TR] TR3 Shift knob restoration

[Randall]

> Yep.  That's why I kept my TR3 shift lever when I swapped my 
> TR3 over to 
> a TR4 overdrive gearbox. No clearance issues.

I took the other approach, my TR6 gearbox is wearing a TR3 top cover.  That
way I got to keep the dipstick.

But a previous TR3A had a TR4 box with TR4 lever, and I don't recall having
any clearance problems with it, either.  The lever was taller, but cranked
backwards at an angle so it wouldn't quite go far enough forward to hit the
dash.  I even had a push-pull switch for the OD tie-wrapped to the top of
the lever, so I could move the switch with my middle & ring fingers while
simultaneously shifting gears.

-- Randall