Ahem... I actually owned a twin turbo Pulsar... My brother (aircraft engineer) built the manifold.. Took a little persuasion to make it all fit.. The turbo's used were of the CA18, or two CA18s..
The reason he did it was cos someone said a) it couldn't be done and b) if you did it would go stink..
Anyway, it went pretty damn good.. Came on boost violently and flowed a lot of air..