I've currently got a Bosch vacume dizzy from a 1973 bus in my 69 panel van. Unfortunately the diaphragm is nackered and looking at the prices of a new diaphragm unit there about £30 which considering the dizzy is not great I'm not willing to fix it.IVe heard a mixed bag of reports about non genuine dizzy's and also electronic setups. I would like go for a pointless type setup but wonder if there's a good unit that has a proven track record .Can Anyone help as I'm not sure if the ones on fleabay are up to much .