If you or anyone else would like a 4.1 deep oil pan and pick up I can make them no problem.
I'm a sheetmetal worker/welder for a DOE nuclear site and have been fabricating parts out of carbon and stainless for years.
I would guarantee it to look better than the one pictured in this post and could even make it seamless to appear stock if that's what someone wants. I would also use the tig process not mig for a better looking finish even if welds were not to be smoothed.