I picked up a sbc 350 bored to a 355 block # 880 I got it for 100$ came from a Silverado I guess, guy says it has roller cam and that's all he knows about the motor, just wondering what a good set of heads to throw on here and should I go with some piston s or flat top, I've got a edelbrock torker intake for it, I'm building a modified right now, good motor or what, in put would be great on a good build will be racing b mods and a new and up coming class at one of my local tracks hobby mod class