Concave pyramids of second sort (CP II) are formed similarly to concave cupolae of second sort (CC II) with a comparable logic of emergence to the regular-faced convex pyramids. They are formed by enclosing the space over a regular polygonal base by the lateral deltahedral wrapper consisting of equilateral triangles meeting in common apex. The plane net is composed of double row of eq... https://www.diegojavierfares.com/hot-savings-Turbo-Kit-Garrett-G25-660-Focus-ST-2-0L-Ecoboost-Stock-Location-Bolt-On-72-A-R-Ext-Wgt-best-super/