Need Advice: Engine Replacement for my 1978 Crown School Bus
So I have a 37ft 1978 Crown Coach school bus with the pancake style engine. It's a Detroit Diesel 6L-71T. However recently one of the valves disentigrated and now I need to replace it entirely because it's cheaper than a rebuild. I've been looking everywhere for one of these engines for sale, but no luck so far and I really really miss my bus! Do any of you know if it's possible to replace it with a similar engine from another company? And if so, which one exactly?
Thank you so much for your help.