FYI...the Pizzaz aluminum engine mounting strips seem to break for many guys. I broke one strip using an Irvine .53 but I didn't notice it until I pulled the Irvine to install my Ys 63. You can buy 1/8" x 3/4" aluminum at many hardware stores. It's a bit beefier than the supplied pieces.

The YS 63 really pulls a Pizzaz nicely!!
Chuck