Drag car converters

Who is making good converters for bracket drag cars these days? I have a 9.5” from Cope in the car now, and after 8 years I think it’s showing some age on the track. My 60’ times will swing .04 on a good surface within a few runs. I can’t say I’m surprised given it’s age, and it wasn’t built for my current setup of more power plus a transbrake. I assume now I’d need an 8”, and just sending off my old converter to be cut open would be futile. Who are some recommendations? I have no problems using Cope again, but I’m open to opinions. It’d be nice to get something within a few weeks, so maybe I can get the car back on the track before this season is over.