performance?

[WhiteV6]

You have to run 3500 heads to use the 3500 lower. I wouldn't say stock 3500 manifolds outflow ported 3400 manifolds. Its not really important since you can't use 3500 heads with 3400 manifolds either.

[02AleroGLS]

Ok i cant have much down time cause this is my only car and i dont really have the extra core charge money so what do you think i should do then?? Maybe run the ported. Lim an d3500 uim and the lx5 tb? Or would it not be worth it? Sorry im just trying to find the best bang for the buck..