8.8 swap

You can get conversion joints for 1310 to 1330 and 1330 to 1350 but depending how much power your putting down it might just be worth changing the trans yoke and going to a custom shaft with 1350 joints both ends. I ran a braced 8.8 with aftermarket axles and 1350 joints knocking on the door of 8's in the quarter with a 3000 lb car.