Looking through the box also reminded me of the first kitbash I ever did- an SD 40. Below is a shot of 3004 at SJ cabin.
The unit was kitbashed using an old Athearn SDP40 and a GP35 shell. I used a how-to article in RMC from the late 1970's- early 1980's as a guide. At the time, there were no commercial models of SD40's or SD40-2's available. I planned to have a large number of these units on the railroad, and this project seemed to be a good solution. Numerous Details West and Detail Associates parts were added, and new handrails were formed from .015 brass wire. I believe the article described how to make a powered unit, but this one is a dummy. This was also the first diesel to receive the "new" paint scheme that was introduced in 1966 with the large "CWE" herald on the side and "Central Belt" on the nose. Note that the CWE herald is smaller than on all subsequent units. It was done using Champ Block Gothic 3/8" decals, and I quickly decided after completing the unit that the CWE needed to be larger.
This unit was finished in 1982, and it took a lot longer than I thought it would. Fortunately, within a year or two of finishing this project, there were SD40-2's on the market with much better detail and accurately scaled hood widths. While this project was fun, kitbashing a fleet of these would have been a real challenge!