Thanks guys.
Bish
Not sure why Trmup added feifel air filters, i am guessin they used an early production Tiger kit for this model rather than a late one.
Yes, the stamp inside the hull piece said "Tiger 1 early" and there were extra pieces that I assume are for the early production model (which I also have in my stash), and of course I have no idea about the air filters LOL.
The Sturmtiger and Brumbar were fascinating to me as a kid. I was amazed that they shot such large shell and had no idea the ammo was rocket assisted.