mustang gt

My 95 5.0 GT I built is running really weird. Before getting up to temp it bogs down and wants to stall. When it is up to temp it bogs down and stalls when putting it in gear. I have to give it gas just to keep it running. When I do give it gas it usually hangs around 2,000 rpm. It doesn't snap...

Came across the forum while doing research. I picked up a 1997 Mustang GT Convertible, harvest orange with a little over 140K on the odometer. The last Ford engines I worked on was the older 5.0 and 5.8's. I'm mostly a Chevy guy so hopefully I can be schooled on the modular engines. Will post...