Help with cam selection

What manufacturer does a good job with headers. Looking for something that fits with having to be wrapped around the torsion bars and not block out the starter. The pistons will be slightly dished and I am leaning toward a scat rotating kit. The forged cranks are almost double the money then the cast steel. Is it really a needed upgrade?

Oh, lastly, what does GVOD mean?
Thanks for everyones input,
Rodney

TTI Headers

YEs forged

GVOD = Gear Vendors Overdrive

I'm going to be using a voodoo 30200741 solid flat tappit cam w howards lifters in my 10:1 416 with aluminum heads that flow around 280 @ .600. .546/.566 lift 243/251 @ .050 lobe separation 110. Time will tell. I'm hoping it goes fine. Was recommended this cam by a reputable builder that I trust. I'm looking to be rite around 500hp/500tq

I had eddy RPms with a very similar cam. 10.5:1 and ported eddy's. 503hp @ crank.