I modernized a Yugo 59/66 with the TAPCO T-6. No bayonet. I got a Scout Mount for a red-dot optic. TAPCO mags. It all worked okay, it's just that no matter what the Yugo SKS, especially with an optic, doesn't balance well, or to me it didn't. It was nice, but I guess my expectations were too high. It still didn't feel as good as I wanted and hoped for. So I saved up my pennys and got an AR.
Oh, and if you're going to modify an SKS, don't forget to make it 922r compliant or you may have an unfortunate encounter with the ATF.