I purchased a Sony Xplod head unit from good ol Ebay, and installed it last night. It looks pretty slick. The panel where the old two post radio unit bolts up, some PO hacked it up to fit a two post radio that wasn't supposed to fit in there, so I didn't feel so bad cutting it to make my new radio fit. But it looks very nice and I'd recommend this modification to anyone with a restomod.
All you need is a dremel, a cutting wheel, and don't forget the safety glasses! I will try and have pics up as soon as possible to show off my handy work. It really turned out a lot better than I thought it would. Now I need some good speakers........
Watch my progress at: