Agreed Will, a PI engine would be ideal, I didn't suggest it as the OP only asked about cams +intake or PI head swap. Pulling 2V heads with the engine in the car is a PITA.
I gotcha. I suppose I was just making sure ALL of the options were on the table.
Lemme sum up my opinion.
REALLY small budget and easy to do: PI cams/intake. Can easily be done for <$300 and is worth a solid 30 rwhp. (P.S., I've got TWO extra sets of PI cams laying around.
)
Much better gains in power: PI head swap or PI motor swap. Just the head swap if you want the most power or don't ever have plans for boost. The entire motor if you may want boost one day or don't want to have to put 93 octane fuel in.
At the VERY bottom of my list would be an aftermarket NPI cam swap (no offense N8, I've done it, too
) I've done a cam swap and a PI motor swap, and all said and done, the PI motor swap was significantly cheaper, and netted a MUCH larger power gain.
I've said this in previous threads, and I'll say it again. I've been in the NPI Mustang game for right at 6 years now, modding for about 4 (all on the same car). Knowing what I know now, and if I had to do it all over again, a complete PI motor would be the very FIRST mod I did on the car. Simple, cheap, non-complicated, and you don't even have to go into the motor to do it. PI heads alone are a great option if you know that you don't ever want boost, but they WILL be a downfall if you ever decide to go boosted.