One popular conversion to carry out is to fit a set of triple Weber DCNF carburettors which is a traditional modification using expensive & hard to get hold of parts comprising:

Special inlet manifold, gasket, 3x Weber 40DCNF carb's, linkage kit, fuel connector pipe, jets for carbs. Also shown is a set of 3 gasket/repair kits for carbs - a must to save time later (carb's & carb parts are difficult to obtain & can take months to arrive!)