One factory replacement Dana Spicer 1310 u-joint part# 5-1310X . These are the strongest stock replacement u-joints available. Forged Cross no Zerk fitting. Quality at a reasonable price.
If you need one of these for the front or rear of your standard driveshaft - The stock driveshaft Uni's are crimped in and can not be replaced, instead you will need to purchase a whole new driveshaft, such as the Tom Woods one we have available here.
However if you only need one of these for your aftermarket driveshaft, you'll be fine ordering this product.