Got back form sanspeed today. He fitted the 36mms but said there was no point keeping them, as my carbs are the old, old, old 40's and they would not like the 36s, as a run on the road proved. So stuck the 30's back in and had a tune up, giving me 130bhp (10 more) so fairly happy, just dissapointed about the chokes, on the look out for some slightly more modern 40's for my pinto now if anyone knows of any!!!