After checking a number of cars, we found the exhaust manifold flange is similar to the TR-3, early TR-4 and early TR-6 flange. The Triumph uses a 2 inch pipe with a three hole flange, and the 300TDI uses a 2.25 inch pipe with a larger three hole flange but with the same bolt spacing. I found a new TR-3 partial downpipe in my garage, from when I installed the header on my TR-3 back in '73...... As Dawn says, I apparently don't throw anything away. I can use the TR-3 pipe to fab up what I need for the 300TDI downpipe, and I will order a 2.25 inch blank flange to fab up a usable downpipe.

I still need to gather a few more bits. The right side engine mount block bracket was trimmed to clear the oil filter housing, but then found the mounting bolt holes need filed to line up to the holes in the block.

Bob