Ross Switch to Replace Atlas O

your best bet would be to contact Ross directly.

http://rossswitches.com/contact/contact.html

It depends. A pair of Ross #8's will do the job, but you'll be looking at a longer overall length for the crossover. If the length of the crossover is an issue, a pair of Ross #6's should work. In either case, you'll need to do some cutting and making some fitters. You can use Atlas joiners with Ross turnouts by cutting the stringers at the end ties and sliding them back and the Atlas joiners will slip right on.

Thanks, Matt...I appreciate the response.