Hi John,
A PG150C-1/2 in good condition will make 4.8-5.0 GPM @ 4000 pump RPM @ 100 PSI.
A 110 pump in good condition will make 12.4-13.0 GPM @ 4000 pump RPM @ 100 PSI.
So, the 110 would be HUGE for your application. You could always loop it to get rid of all that extra fuel. If you put a pump sizer loop on the car, you could run a .120 in the loop and a .120 for a main pill and probably be pretty close for example. The equivalent two areas together would be about the same as running a single .170 main pill (don't know your nozzle size or other details, so we'll use that as an example). You'd leave the sizer alone for the most part and just continue to change the main pill for weather tuning.
Or...you could trade or sell off the 110 for a pump that is similar to your other one and sized better for your needs.
Spud