Which carbs to use for a GPZ1100 swap

Will be installing carbs on the GPZ1100B1.

I heard that KZ750R1 carbs are the same has a kz1000J which are Mikuni BS34.

I got in hand a set of a KZ750R1 (1982 GPZ750) and a set from a 1983 GPZ750 Unitrack.

both look quite the same, which one to use???

Tks

They might just be tha same Mik BS34´s but the spacing of throat mey be differnt as 750 is much smaller engine.

According to Sudco RS34 listing it is the same but make shure first.