Overdrive or don't worry about it? !

But compared to swapping a chunk?

...just for a 200 mile highway drive.

sure tires are easier to do then a center section. but is only 200 rpm really worth it? i say no. barley notice that.. 500-1000 rpm ok.. i can only speak for myself.. i don't want to bother doing either (tires or center section) . i want to go out to the garage, start the car and go where ever i want whether its 5 miles or 300 miles. i can't be bothered changing crap just for a drive.. no matter what you do there will be a compromise so choose what side of that compromise you want to be on and go with it...

best of all worlds woudl be OD of some sort but thats going to cost 2500+ dollars most likely but it will drive like you want. the only compromise going OD is the money...

.