Replacement Old Town canoe seats

I need to replace both seats in a Penobscot 16. Most replacement seats are 8.5" center to center, but the measurements for my canoe is 8.75". So it looks to be 1/8" off for each side- is that a big deal? Should I seek out the exact specifications or will drilling them out not perfectly centered make a difference?

You’ll be fine if you just use your old seats for drilling templates. Seat frames are beefy enough that having holes 1/8 outboard from ideal won’t matter.

Just fyi sells Old Town style replacement seats. In my experience his stuff is excellent quality at a reasonable price. You could give him a call to make sure you get exactly what you want. That’s the way I’d go if it was my Penobscot.