Is it any good

Hey Guys and Gals, a good friend of mine gave me a brand new Hughes 24-25 stall converter, I have a '70 dart 340 it has a Edelbrock 650 avs, air gap intake, big valve J heads that are ported and polished, Dougs headers, MSD 6 box and a 727 trans with a shift kit, the cam is unknown its pretty lumpy I would guess bigger than a comp 268. It also has a 8 3/4 with 3.23 gears and a worn out cone sure grip, the tires are 235-60-14 that are 25 inches tall, soon I'll be changing to 3.55 gears and 255-60-15's that are 27 inches tall, The car runs like a raped ape but it seems like the stock converter reaches its stall instantly. I know I should have one custom made but ya can't beat free. Do any of you experts think it would be worth a try.

Thanks Jeff