Hi Clois,
Have you considerend the Canton road race pan? Low profile and no custom work. I am not sure of dimensions and price. You can contact Rob at Blue Oval Performance in Denver at 303-762-8298 for details. Requires a Canton
oil pump pickup and you may as well get the windage screen while you are at it. Mine required a small divot at the front of the pan to clear my
oil pump but that is probably specific the pump you are running.
As far as spindles, regardless, the proper look of the fender versus the wheel dictates ride height and changing spindles will not alter this dimension. However, to get a little more travel in your coil over setup, you may want to consider a dropped spindle from Heidts. A 2" drop allows you to crank a little more into your spring position and may allow a little more travel over bumps. I am sure there are other options but none will improve your
oil pan road clearance.
How is your overheating/head problem coming along?
Gary