I have a good feeling about them. I have covered a LOT of videos and internet chatter about various heads covering all the usual sources. AFR, Trick Flow, Edelbrock, SVE and other China sources. AFR has a 165 head that is on price point with SVE, but the others' price point doesn't line up. While I'm pretty sure the SVE heads are a Chinese casting, They seem to be of good quality. There are some youtube channels that have shown SVE 170 and 185 installs, and all were positive. I didn't come across a single channel with something that was actually negative. For what I'm looking for... a relatively "normal" NA build... these are reportedly a great bang for buck option. BREW2L recommended them several times as well. They've also sold out on me three times before I could save the money up. So that says something as well.
While I won't get this done over a weekend, I'll update my build post with all the details.