Hello Doug,
In height they are almost at HC49 (x-tal) height.
The largest component is the tuning resistor but also the BNC is tall.
In mij case the highest part is the cooling for the power transistor but that can also be an other model of that.
The attached picture is the 30m SST I have so you can see for yourself
I also added the manual
Best regards/73
Kees
PA1CJT