I have been trying to find find a manifold for my TO4 turbo for the last several months.  I even have 2 TO4 turbos but no sutable manifold.  Because of my engine mount, space is very tight.  However, I am pretty sure that the HKS cast iron manifold WITHOUT the provision for a waste gate will work well.

The problem is that HKS has stopped making them, and I can't find anyone who has them in stock.  I know there must be a bunch of them out there.

Does anyone have any ideas on how I could get my hands on one?

Also, I think I am going to install a cocktpit controllable check valve on the oil supply to the turbo.  Someone mentioned using a mechanal valve, but I was thinking of something electrical.  Any ideas on a sutable valve?

Dave Leonard