Monday night after the dyno session, I got the Bursch 1.625" headers removed and installed the Knight 1.625" headers in preparation of getting the car towed to the fabrication shop on Wednesday. Turns out the fab shop needed to order material so we pushed the car tow until Monday.
Anyway, when I installed the Knight headers I saw that the #6 primary tube is in contact with the oil supply line directly beneath the oil cooler that sends oil from the oil tank to the oil pressure pump.
I didn't like the idea of the #6 primary exhaust tube heating, via conduction, the oil entering the engine even if that oil goes thru the cooler, if necessary, before it is distributed to the crankshaft bearings and the rest of the engine. So I applied insulating wrap to the oil supply line to reduce the exhaust tube heating.
Another thing I observed is the placement of the collector is very close to the exhaust valve covers such that I will need to remove the headers in order to perform a valve lash adjustment - this was not necessary with either the Bursch headers nor the SSI heat exchangers used previously.
Next up: Off to the fabrication shop to get the muffler connected to the Knight headers, then one more dyno session to see data comparing the Knight 1.625" headers to the Bursch 1.625" headers.