G'day mate, you may have answered this question before but do you have Supercharging kits for a carby 355cu? It is a VN block with a 675 Dbl pumper. The motor itself is in worked trim with a strong bottom-end and ported heads with double titanium valve springs and a 288 solid cam. Also wot a type of supercharger would be best, Positive dispacement or a centrifugal or would it be better to just bolt-on a turbo. Cheers mate