1. Which would be the best manifold/downpipe for a fast road 1293 with SW5, lightened flywheel, twin hs2s, single box RC40
2. To keep costs down I'm thinking mild steel before the silencer because being hotter it's less likely to rust there, then a stainless silencer because that's where the moisture could collect esp on a shorter run - does that make sense? The car will only have occasional summer use.