This set will do 2 models as is and up to 6 models using the extra stripe sets available below.
L-312a GP7/9 Extra Stripe Set w/ Yellow Pilot Stripes $6.00
L-312b GP7/9 Extra Stripe Set w/ White Pilot Stripes $6.00
Maine Central only rostered one GP9 #450. This was the last GP9 built by GMD as Algoma Central #171.