I have a supercharged small block 440 (Mopar R3 Racing Block Bored and Slicked) that has defied previous starters. My last one year old starter with less than 500km broke in two places where the cast inserts are in the gearbox. I have never seen an error in this area. The cast aluminum body broke and failed. My last mini starter was $70 and was made by a two letter company. The lesson is this: pay for a better product like the Powermaster because in the long run it's cheaper and cheaper than failure! Also, I called Powermaster after hours about this app, left a voice message and they called back early the next morning with an intelligent response. I was impressed. This app seems rough for beginners so I will update it later.