Thanks for putting the pics up, Im not convinced TBH mate. After looking at those pics.. The vacuum fixing mounting plate looks different, the throttle bracket is different and the quality of the welds looks different as well.
Wasnt Mike R peed about the MK ones being an exact copy of the R&B ones anyway? Like you say, I'm sure it's still awesome quality.
I'm 99.9% sure this is an R&B one
I've still got the ad thread from when I bought it