My 340 in my 66 developed issues :-(
As I have made incremental upgrades to my combo I have gone through a few different converters. I've had B&M, TCI and now I have an Turbo Action. They we're all "of the shelf" converters. I went with the one's closest matching my current combo. The one I am most pleased with is the current Turbo Action. If I could afford it I would have had a custom made each time. But it's expensive (really expensive here in Sweden) and since I like to change things around I have been able to upgrade and sell etc.