Yeah they did but they will be chnging again soon. Try to find a design that fits considering the recipe, the look of the pack in general and the original look of the engine.
Sorry, I updated the link yesterday, just forgot to post saying that I did. It's only a slight shift because there's a fine line between it looking too much like aluminum, and looking too much like tin.
Thanks andrew. I noticed they look to much like aluminum also which threw me off because I keep all my ingots in one safe . I'm glad to hear there has been another update. Personally I like the current electric engine look but if you got something even more awesome in mind by all means go for it mate. Keep up the great work and the rest that help you also. Fantastic 16x texture pack.