Hi Hugo;
Looks like A 2A46 without the Thermo Sleeve, there are A number of AM turrets that you could use. Flip A Coin, and take your Pik.

Trumpeter would be my first choice, But that's just Me. For what I can remember, there was not A Accurate AV ERA wise. I know Miniarm makes A set of ERA Bricks, but they mite be hard too find. White Cat Hobbies would be the Best source for Miniarm sets, as for the Hull, again Trumpeter would be my choice. If my memory serves me rite the Attachments for the ERA was the sore area that needed too be accurate.
CHEERS & GOOD LUCK; MIKE.