you can get the manifold/turbo combo new from modern performance for 800(900 for a 20g version) which is fairly cheap, just to let you know though, the 420A is not a SOHC motor...if your talking about the SOHC neon engine the engine code is S4RE or some such I believe, the neon DOHC engine is NOT a 420A either btw, its a D4RE I believe(these engine codes may be wrong but I'm pretty sure they are accurate) but anyway, if it is a 420A(2nd gen eclipse/avenger engine) the hahn manifold will not fit I dont think