Heads and cam

[Scrapla]

I'm ready for heads, I was looking at the gt40 p's I believe there 270 a peice and cast iron and I was gonna install some 1.60 roller rockers before the install is this a good choice, my cars a daily driver and i'm lookin for some low 13 sec runs but also not break my bank can anyone give me some help I would also like maybe a E or B cam cause i'll also be changing my timing chain cause my cars goin on 140k plus miles.