My wife has a '78 Lincoln which only takes about 5 minutes idling at the curb to warm up.
I'm not sure what temperature ranges you are dealing with, but if you commonly have temps below freezing and occasionally below zero, you might consider getting a block heater (frost plug heater) or a tank heater for the pickup. If there is no available electrical outlet, the easiest and cheapest fix is to get a grille cover to partially block airflow to the radiator (yes, it can be done with a piece of cardboard), but don't overdo it if you live in an area where winter temperatures are commonly above freezing (or if you operate the vehicle for long periods of time under load) or you might overheat the engine, which is far worse than being chilly for a few extra minutes.
I have used both methods in concert, and the coldest weather I ever drove in was -54 out of Riverton, Wyoming (static air temp, not wind chill). It took over 100 miles before I could not see my breath in the van, at about 200 miles (driving north into warmer weather (only -30) I could unzip my coat some and think about taking my gloves off inside the vehicle. Covering the entire grille helped a little, and I never would have started the engine without a crankcase full of synthetic oil (easier cranking and better oil flow at startup) and the frost plug heater to warm the engine up before I started it.
If you are running a manual transmission in temperatures below zero, you might consider replacing the gear lube and differential lube with synthetic as well, it makes a huge difference getting going and saves clutch in the long run.