first time to the track with new combo (video inside)

Mine too were for 904
There are good converter companies out there.Continental is one of them.
Do a new Thread asking that question and see the responces.Use them to see the favorite choise of the racers.Then you decide.
When talking to the converter company give them as much info as possible on your car and setup.And tell them what you are looking for.
Don't get me wrong,Hughes is a good company.I didn't tell them my set up,just called and ordered a 3500 converter for a 68 up 904. When I talked to them at a NHRA meet they explained that details are important such as the horsepower you put in front of it,etc.