8 1/4 rear end questions

My question is does anyone make aftermarket axles for an 8 1/4? I have one in my dart that I upgraded to 3.73 and a sure grip. I have no complaints so far. Check your widths too when looking. I originally got one out of a dakota but it was too wide. All I ended up with was the 3.73 gears. 2852905, 3723598, 3723599 are direct fit A-body housings that will bolt right in. 7 1/4 to 8 1/4 may require a shorter driveshaft.