Well I finally pulled the trigger and bought a used ct 26 for a supra. I also found a seller on ebay that will sell an outpipe flange in 3" instead of 2.5" so I may go for the 3" pipe like Bill mentions.
Now I am shopping for the oil drain flange for the oil pan as well as oil feed and drain flange, and the water feed and drain flange. This model is water cooled so I will need to T them into the heater hose lines. I assume these are ok to use. Seems easier than using the radiator hoses.
