What he said.
Wiki says you are at 371 ft above sealevel, so you got that going for you.
The only way I would spend money on a cam is if the stock one was wore out.
The only thing I would do different from TT5.9mag, is; I would put a 2800TC in the bellhousing first, and then gears; oh wait, I already did that, with zero regrets.
Ok Ima thinkin' a short why is in order;
If you put a bigger cam into it with a later-closing intake valve angle, WITH NO OTHER CHANGES, you will lose cylinder pressure. When that happens, the car starts to feel like a slug..... because it has LOST low-rpm power.. Your engine may gain absolute power but it will come much later in the rpm band. So with same convertor, you will be taking off from zero mph with less power, and with same rear gears, you will experience less performance...... until the rpm gets up into the midrange, beginning at say 3500rpm.
With 2.76 gears, this will not come around until perhaps 35 mph. That might be considered the break-even point to the stock cam. But full power might not show up until 4800=48mph.
See what I mean?
Other gears will give better results.
A higher stall will give even better results.
But if you are doing pistons, you are in an ideal position to increase your compression ratio, and that will provide the platform to run a slightly bigger cam.