60K Stock 96 GT Need More Power

[elsoloscuro]

all -

I have a automatic 96 GT which I purchased used.
It has 60,000 miles on it but drives great and I have had no problems with it.
The car had some previous modification on it which were mostly cosmetic(light bar, hard tonneau cover, lowering kit, saleen rims). The only modifications I can find outside of these are a K&N filter and a engine stabilizer bar.

I am thinking about replacing the rear-end gears, then doing a PI headswap. Afterwards I am thinking about replacing the exhaust system.

Do these mods make sense? Are there any issues i should be aware of?

Thanks in advance,

E