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Most of the tricks for the SU's are correct for the side draft
Zenith-Strombergs or Pierburgs (old Mercedes) as well. However for any kind of serious tuning SU's are far better as metering needles and parts are available in a broader variety.
Other accessories such as chrome air filters, ram pipes, polished housings, etc are more frequent available for SU's. Don't use HIF (Horitontal Internal Float) SU's; theses have been designed to meet US emission requirements and are not suitable for modified engines.
If you need more flow you should use a pair of 2" HS8 SU's, as used on factory Volvo rallye cars in the past. The inlet madifold needs to be widened however. The carbs can be found on old inline six Jaguars.
BTW:
Anyone got a PC-file containing SU needle charts?
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