I hope you Devcon the plug weld holes from tubes to the housing. Mine developed an oil leak sitting in the crate. And figured it was a pinion oil seal. Nope, further investigation revealed all 8 plug welds had developed crater cracks from different cooling times from the differing materials. Tried re welding......unsuccessful. Filled them with Devcon, smoothed them over and never looked back. Another couple of guys over here have experienced the same thing with their S60 housings. Awesome product and great service though.