Vortec V6 heads

Hello I am running a 1985 4.3L V6 in my 1985 toyota 4runner. I have pulled the engine out and will rebuild it. Goal is 300+ HP...I will run flat top pistons, big cam etc..My question is this..Heads: I was told that the Vortec heads flow much better then the stock heads that are on the engine now. I am willing to invest big$$ in rebuilding a set of heads, to include precutting the valves for 2.02 & 1.60. Shaving the heads 0.010 etc. I just want to know are the vortec heads better flowing and if so what is the part number I am looking for. I will buy the Edelbrock aluminum intake for the carb set up. They now make an intake for this set up. Help me out..
Thanks in advance Chuck

Yes vortec heads flow way better and are worth the money. I'm not sure of the numbers needed. But from looking at them, the oldest set I found came on a 96. Besides the different intake you will need the plastic valve covers for rocker clearance.