If you are running stock original rims you can get 155 13 tyres they are a light truck tyre /commercial tyre there are a few different makes. They are a 100 profile tyre and have a similar tred pattern to the original tyres.

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Can you buy a drill guide or for drilling the new holes and what is the correct size of the holes

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Is there any way of I'ding the correct base buy the the numbers cast into the base or is it a case of measuring them

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The vacuum line ports are the 2 holes that are horizontally in the same position on the left of pictures 1 and 3.

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The issue I think I have is that the vacuum  ports are on the bottom side of the butterfly which I suspect they need to be on the top side but I can't find any detailed information on the carby and port positions.

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Hello car gods,
I'm trying to solve my carby issue.
My car is a stock 1967 HR Standard with a 161 and 3 speed manual.
The carby  is pulling full vacuum on the vacuum advance and as a result I am not able to connect the vacuum advance on the dizzy.
The numbers on the carby are as follows 23-3019 on the fuel bowl and on the bottom half on the cast iron body 2376050 BXUV-2.
I had the carby over hauled due to play in the bottom shaft and have the problem ever since.
Can anyone confirm that I have the right base as the numbers that keeps coming up for the base is 2375024 BXUV-2 and I can't find any info on the base I have.
Or is there possibly something missing from the vacuum port in the carby.

Cheers