hector5.3vortec

I have a 2000 GMC sierra single cab step side 5.3 and I'm about to start fixing it up for a drag/street truck but. That I also drive daily....right now I only have a cold air intanke spacer pacesetter long tubes nd exhaust with a weak a$$ tune-__- but I'm being offered a tourquer V2 cam but idk if this kind of cam will work great with this engine?....nd what kind of heads should i get? Nd gears? 373's or 390's...needs some advice nd help asap! Thanks