It's not that I had mechanical problems with it it's just that an off the shelf-one converter-for all applications isn't a good way to go. You don't realize how pontential your combo has until you get a convert made for YOUR motor....those off the shelf jobs leave so much on the table performance wise it's ridicilous. A custom converter is not much more than one like that TCI and it will make the car much more efficient and more pleasurable to drive....not to mention faster.