6 Pack center carb for 340

I think this is a Mopar Direct Connection part
Please see pictures for condition and part numbers
I have never tried this carb, it is exactly how I bought it, I was told it was a direct replacement for my center 340 carb but it I don't think it is
Looking for $500 which includes postage and packing and paypal fees
If you want to collect I am in Essex UK
Thanks for the ad