Gas smell start engine, turn on heater, after Idling for a minute or so we get this real strong gas smell. not an exhaust smell.

I would check to see if you have any leaks also. But what is more important is, is this happening when the vents are on recycle air or just when you have them on fresh air. If its when the vents are on recyle air. You not only have a leak, but the gas is getting in the cab of the car as well. This is a very serious problem.

start by going to a news paper company, and get a big roal of printing paper. They give this away when the roal is almost used up. It is white and durable. Put the paper under your car and secure it with rocks or something. Run the car until the problem starts to happen. Now let it idle for a few minutes, and start looking on the paper to see if you get any gas drops. Make sure the hood of the car is closed, so it doesn't evaporate before it falls to the ground. If after a few times you still cant find the problem. Meticulously go over every inch of your fule lines. especialy around the filter. The plastic clips are very easy to break with some age. Hey guess what this could be a great time to REPLACE your fuel filter. follow the lines especialy around the top of the engine where there are a lot of rubber lines and plastic connections, that can be disolved after years of use, or days of using fuel with fingernail cleaner. DONT USE FINGERNAIL CLEANER IN YOUR CAR. THIS IS A URBAN LEGEND, AND HAS KILLED MANY CARS.. let me know what you find and how this goes.

Pbly a leak in the gas line i would have some one start the car and look under the car to see if anything is driping from under it and under the hood.