Just what it says, a pair of new 1.5" SUs, INCLUDES linkage, heatshield AND manifold; just what you want if you've got a pair of old tired carbs. Twin HS4 SU carbs have been the most popular performance tune for the A series fuel system since the early Monte Carlo rally days. There is no question about the performance potential of this set-up but old worn out carbs can have very disappointing results. Twin carbs on a good manifold with quality air cleaners easily fit under the bonnet of the Mini or Sprite and Midget and could perform as well as the highly touted side draft Weber! See C-AHT247 & C-AHT248 for ram pipes.