bolt in sub frame connectors

Gold were they bolt in that you decided to weld? I only see bolt on's. Do you think they are better than the MP bolt ins?

They are weld-in only.

http://www.summitracing.com/parts/hss-4014/

[ame]http://static.summitracing.com/global/images/instructions/hss-4014.pdf[/ame]