i have a 1988 mustang gt. it has a full exhaust underdrive pulleys, 65mm throttle body, and a few other small things. but it is always running rich and every where i go me and whoever else is in the car smells like unburnt gas. i have let it go for a little while but now it needs to be fixed. my fuel pressure is 38. there are no cats and no egr valve. is there anything else i could check or replace or even fix to make it stop running so rich??? PLEASE HELP!!!

any advice i would greatly appreciate