Does anyone know if the Dragon/Cyber Hobby StuG III Ausf.E can be built as an Ausf.F? Llooking at the sprues there are extras not used - including what I assume is the barrel off the asuf.f. Anyone know which parts replace which other parts?

also, a more generic question if I want to

1) load up the rear of the StuG or
2) add a decent number (5/6) tank riders for Operation Barbarossa

what kits can I look at? is it things like Black Dog, Legened etc or is tehre a more generic "german tank supplies" or "german tank riders" that I can use?

thanks in advance