I don't think you can extrudehone plastic- see Z intake manny. Also, last I checked w/extrudehone, ~2009, on doing a DSM intake manifold (four runners, made of Aluminum) it was
I don't think you can extrudehone plastic- see Z intake manny. Also, last I checked w/extrudehone, ~2009, on doing a DSM intake manifold (four runners, made of Aluminum) it was about $600. Only worth it for a track $$$,$$$ car IMO.