Give Jessie a call at Biggs performance carbs (715)835-3726. He will custom build you a carb for your application. I have his 950 on my 440 in a 1970 charger & a 1050 on my 472 HEMI in a 1970 Challenger. I have had great luck with his carbs & if you need help he's a phone call away, great customer service!