Hello guys. I am in the process of building a 455 buick. Not sure if i am gonna go with nitrous, or turbo.The heads flow around 335 at 600 lift, and they are 243 cc on the intake side. The exhaust is around 260 at 600 . It is a 4.50 inch bore , but dont have the crank yet. It is going in a 3300 lb car . Any ideas as to what stroke u would use, and what turbo size/ single or double.I am looking for around 1300 hp.My old engine is a 482 ci, and makes right at 800 NA.New engine will be close in hp na. I have done some research, but hear so many diff answers. Dont have enough money to do it twice. I appreciate any info.