Call Randy McDowell in Ashland Ky, he is the best in the world! He can tell you exactly what you need. He worked for NASCAR for years and has owned his own engine building machine shop for 23 years, there is no one better. He built a /6 for me that is a beast. When I get the suspension finished I will post videos! He shop name is POWER TECH RACING ENGINES 606 928 3950 . You can friend him on FB if you like and talk to him there!