Fred,
I really love these kitbashes, and so does many converisons I´ve fortunately seen here. Congratulations!!!
I´ve seen some initiatives like this. I remember that I saw in 2004 or 2005 an article by Harvey Low, where he did something similar. BTW, I will do something similar. I just don´t know hwen!

However, you added something different: you used both uppser and lower hulls from ESCI/Italeri, instead of using the lower from Revell. Is it more accurate?
I loved the PE you used, specially for the grilles. Eduard?
A curiosity: why you will use the ESCI tracks instead of Revell ones? They seem to be better.
Another ones: do you plant to do a latter model? Maybe the ESCI sprocket should be useful (18 teeth).
Please keep modelling. I will follow with pleasure!
All my best, Ricardo