I work at a foundry, u need 2 patterns and 2 core boxes made out of hardwood, those are used to make a non reusable sand mold. then u pour in the metal, then u need to do some cleanup grinding, then machining-made in usa about $1000 a pair. what foundry did u take a manifold to to get a quote? and the $1000 is after spending $2000-$3000 having the patterns and core boxes made. Ritter makes a great race block
