I wish I had bought another one back when they were available for my D150. Years ago I traded a complete race ready 904 to a friend for his 5.9 / 360 crate short block. it was drilled for early model head oiling, we put in a 590 lift cam , put on my W2 heads and it ran a best of 10.70 making around 525 hp, after spinning a bearing we put a steel crank to replace the cast one, better rods and pistons with the same cam and heads made 549 hp and went a best of 10.40 in my Dart. After many years and over 1,000 runs I took it out in favor of my present 408 , it still ran great and is being redone as we speak for lower compression and pump gas should be around 5-520 hp. I haven't decided yet if I am going to keep it as a spare or sell it.