When we were shopping for a J60 to put in our Fox we went to a shed with literally hundreds of them, stacked 2 in a stillage, there must have been over 100 stillages. We were there for several hours before we managed to pick out 5 which didn’t have holes in the side. The 3 in the photo were the ones we ended up with, 2 were seized and one went in the Fox.
I’ve never blown one up, but the photo below was taken at Folkestone a few years ago, the engine was in a Sabre at the time.