You'll have a tough time getting anything past a 15 counter sprocket to fit.
And, unless your really doing some heavy engine mods you'll never pull that gearing anyway.
You can do some checking of your gearing and projected speeds here:
http://www.gearingcommander.com/Don't forget to enter your correct tire size with your new 17's.
I have used gearing commander extensively and it has always been very accurate for me.
If your motor is relatively stock check gearing for 8500 rpm, 5th gear, at 105 mph.
Something like 15/44.
That should put you at about 90mph in 4th pinned.
If your changing your port timing then the sky's the limit
When I put my SM wheels back on I'll be running 14/44 for a top speed of about 100 mph.
When I finish my new cylinder I'll be upping that just a bit
