416 Stroker Kit Question

Hey, I recently started the rebuild on my 340 after spinning a rod bearing. I have been informed that that the block is already punched .040. When looking at stroker kits I see that most are only offered with pistons up to .030. I was able to find a kit through Muscle Motors that offers the kit with pistons up to .040. Does anyone have any experience with this company or kit. Any opinions are greatly appreciated.

Here is a link to the kit: http://www.musclemotorsracing.com/stroker-category/small-block-stroker-article.html

The one I am looking at is the first one listed.

Thanks