Well, if you don't have gears yet, I would go that way. IMO, gears are by far the best bang for your buck modification. But, if you don't want to mess with gears, I would go for exhaust.
I don't see where the MAF or ignition upgrade would do much for you at this stage.
Or, save up for a set of heads then start building out from there.
Ummm, too many choices
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