Martin:
I hate to go against an advertiser here, but go with one of Tiff Williams T23 turrets. they are more properly scaled to the Tamiya hull, where the BYA one is much larger, more like a Jumbo turret than a T23.
BYA is working on revised read deck asemblies (including working hatches) and a PE & Styrene assembly for the exhaust deflector insyead of the former 'lump-o-resin' they had.
Before ya jump on me, I had the kit, and after examining it, sold it as a loss.
Being scale is one thing, but being in scale with the ~rest~ of the kit is more important, especially for something as large as a turret.
WhiteWolf