Tunnel ram or no tunnel ram...

I talked to Tony Morris today, he explained to me the idea behind twin blade design and also offered standard 4 barrel with annular venturi.
Very nice stuff but pricey. It’s 2500 for a pair of 4 barrels and 3000 for twin blades.
Frankly here I’d go with twin blades but those prices are killing me. APD stuff seems even more like a bargain now ;-)
We will see, I can wait, winter is coming…