Generation III Internal Engine - What to do??? 6.0l build

OK guys I am at a stand still as I dont know where to go with my build, I have a TSP torquer V2 cam that will be going into the 6.0l. I have a set of real ls6 heads with PAC .650 springs that I dont know if I want to sell and buy a set of TSP stage 2 ls6 heads, or should I get ls3 heads? I have all the goodies already such as roller rockers hardened PR's etc. I just need help on what I should do, and I am on a budget of around $1000 for heads, hense why I am looking for used heads.

If you already have the cam and rockers, stick with cathedral port heads. If you go with ls3 heads, neither the cam or rockers will work.

stick with the ls6's for now and save for some real heads

Have the ls6 heads ported, and if you are looking for more power after that sell them and get some AFR's or Trick Flows

What's could I see potentially wise for HP if I sent the heads to AI for porting and used my cam, right now my draw back is my ls2 intake but I will eventually get a FAST.

Why won't the cam work if I have ls3 heads? It's a 04 lq4 block so no vvt etc

Ls3 heads require different cam designs to work properly. A cam ground for cathedral port heads being used on rectangle port heads will produce turd like qualities.

Did you get your knock figured out?

No I haven't touched it, I just got a 6.0l so I am just going to swap it out, after I'll look into it. If its something stupid I'll just sell the motor or part it out