Starting aids...
Detroit Diesels do not normally have starting aids. The aid that I have seen and heard of most often is a fixed ether injection system. I'm not fan of ether - I think that it is very hard on the engine. For me, it is a last resort.
So, I started thinking about other options. My '91 Dodge W250 CTD and my '61 Ford 641D backhoe have inlet air heaters. I looked into the available heaters and found one that would fit into the air inlet housing.
I purchased the appropriate aluminum bung (M22 X 1.5) and welded it into the air inlet housing. The heater is in the center of the airflow coming from the intercooler - the perfect spot.
I blasted and painted the housing and then re-installed it on the engine.
I'm happy with the way it looks. Now, I have to paint the rest of the engine...
Several years ago, I purchased a set of pristine '72 doors from a member of this board. I installed them to see how they look.
When the rear gap is perfect and they line up with the body lines, the window frame gaps are not even. The window frames are straight, the cab is not. I haven't decided if I will do anything about this or not. I know that the fits were not good from the factory and I know that the previous doors did not fit better.
It offends my sensibilities to make straight window frames curved to fit the cab and I can't see a good way to modify the cab to make it straight...