>That looks really good, Doug!  Don’t forget to stick in a couple of thermocouples for EGT. You may also >need a bung for an O2 sensor if you are going to try and measure the F/A ratio.

>Bill B

Roger that Bill.  I have two thermocouples and an O2 sensor  and bung purchased and ready to add when I have my welder add the 90 degree down pipe post collector... 

>...Rather than a rigid support, you might consider installing a damping element to prevent or minimize resonant vibrations. Ball joints close to the >header flanges might also be worth considering in which case, rigid support at the collector might be effective.

>At least, that was what I saw. The experience of others may be different.

>Steve Boese

Thanks Steve:  Will definitely consider your inputs based on testing...

Doug