{"product_id":"amg-m157-cylinder-head-package","title":"AMG M157 Cylinder Head Package","description":"\u003cp\u003eThis cylinder head package comes standard with our street series long block. Easily functions past the 1000hp mark. \u003c\/p\u003e\n\u003cp\u003e*Must supply good core heads\u003c\/p\u003e\n\u003cp\u003e- Soda blasted restored appearance\u003c\/p\u003e\n\u003cp\u003e- Custom bronze valve guides\u003c\/p\u003e\n\u003cp\u003e- CNC Newen Valve Job\u003c\/p\u003e\n\u003cp\u003e- Hand blended ports \u003c\/p\u003e\n\u003cp\u003e- CNC Surfaced to single digit Ra finishes\u003c\/p\u003e\n\u003cp\u003e-Ultrasonically Cleaned\u003c\/p\u003e\n\u003cp\u003e-Assembled with OE valvetrain with modified spring pressures for added boost levels \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Perfect Circle Engines","offers":[{"title":"OEM Valves\/Springs","offer_id":47690384670913,"sku":"","price":4999.0,"currency_code":"USD","in_stock":true},{"title":"Custom PCE Upgrades Valves and spring kit","offer_id":47690384703681,"sku":"","price":7450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/9656\/3905\/files\/IMG_8406.png?v=1708401547","url":"https:\/\/perfectcircleengines.com\/products\/amg-m157-cylinder-head-package","provider":"Perfect Circle Engines","version":"1.0","type":"link"}