Florida,,,,1st things 1st.
If it were me I,d wanna know what the previous [censored]/owner cobbled together to put in this truck.
Get the VIN off the doorpost that will give you all orig equip and where it was built.
2nd get the serial # off that motor to find out if it REALLY is what he says it is(behind alt on right side blockdeck in front of rt cyl head).
Regards Steve sr.