[bhazard]

Festiva LE? You probably meant LX.

$750 seems a little steep for 250,000mi but Im sure it will still save you a lot.

Anyway, yeah you have a carbed engine, which can probably get as good a mpg as the FI cars. Is yours a 4sp or 5sp? If its a 4sp you can swap in a 5sp and drop a good 500 rpms at cruise.

As far as wheels go, the easiest swap to bigger is metro/swift wheels, I have 175/70/13 and 155/80/13 on metro wheels and they are a bit big of a tire, the 155/80 is like 8% taller than stock which throws the speedo off a good bit.

I would personally do the "aspire swap" which you can look up on fordfestiva.com. You get bigger brakes that are actually roadworthy, a functional e-brake, much better rear suspension (with a swaybar), and 4x100 bolt pattern which is WAY more common than the stock 4x114.3. You can run those super light honda vx alloys at that point with a tire thats close to stock diameter.

Advance has direct fit mufflers for like $25 by the way.