PORTED HEADS!!
I'd go for exhaust as well (really opened my car up). From there you could go with a bigger MAF and TB, but you won't see much with it until you get the exhaust done more than likely.
But if you get anywhere near the heads while tearing the engine down sometime I'd say go ahead and pull the heads and do a little work in them. I did and I'll let you know for sure here in a week or so how it helped me, but I'm adding a ton of stuff at the same time so I won't be able to tell where I gained the most.
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Indiana Stangers Association
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