Its a Mk11 Silver Streak tuned version that I purchased new from the old Reginald Denny hobby shop in Hollywood about 1961 and how they happened to have it I,ve no idea.

Originally I used it in a variety of controlline ships and a couple of early rudder only RC ships and recently it has been living in the Kerswap with just a servo controlled pinch off for the fuel.

It is my only Diesel but has been my most delightful engine over the years of several hundred.

I am not familiar with your ETA but if you have not used it yet do get it in something you,ll probably not be sorry.