8 inch converter questions...

I have a 8" A1 convertor in my 70 Challenger street car and it works great!
At highway speeds It did gain 100 RPMs over the 9.5 convertor that it replaced.
The Challenger is a .030 over 440 with ported Indy SR heads, solid roller cam, 1050 QF carb and a DP intake.
I have a low first gear set in the trans but I only run a 3.55 gear.
The car weights about 3700lbs with me in it.
One Sunday morning last summer I jumped in the car put the top down and headed up I-17 from PHX to Flagstaff to see how the convertor would do.
I drove 50 miles north into the mountains running 65-70MPH, around 3000 RPMs.
The convertor had NO problem what so ever.

By the way I also have a 1969 Dodge Dart that is a SB street/strip car that runs very low 11s with a 9.5 convertor but A1 sent out my new 8" convertor today so I will be pulling the trans this weekend to be ready for the new convertor.