Always impressed with Brett's work. Your Dart is very impressive.

When I do cast aluminum mods or ah-humm "repairs", it is very important to first shape, then blast to look for any minor errors. If the part's shape is convincing, then I use a hand-held vibratory engraver to bounce over the altered, I mean REPAIRED area, and non repaired area to blend the surface finish. After that blast again. I'll post pics next time I do one of before/after.

"use it 'till it breaks, replace as needed"