I have transplanted this 1962 Corvette engine and close ratio T-10 with a 3.70 posi into my 62 Impala SS. The car is an original 327 300hp so I am running the original 2.5 inch rams horn full exhaust. Runs great!! I am just looking for opinions on adding the Headman elite long tube headers for a little more torque on the low end. Just thinking that the heavier Impala might benefit with headers. The engine is rebuilt bone stock from carb to oil pan, 11.25 CR, Duntov 097 solid lifter cam, 461x double hump heads, Carter 3269 AFB, 397 aluminum intake. I know there is a lot of performance experience on this site and all suggestions and comments are greatly appreciated. Thanks....Bill