loss o power...sudden

So I be cruzing along today...and I went to floor it to get around some &(*^&(....and I my truck just fell flat on its face.....what gives? I was doing fine and then suddenly lower rpm...ok...get about 2500-3k and its stuttering and jerking....I shift and ok but too much throttle...and it was like LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLUUUUUUUUUUUUUUUUUUGGGGGGGGGGGGGGGIIIIIIIIIIIINNNNNNNNNGGG along...shift again and ok.....what the hell? Im in no fucking mood with this truck right now....considering how pissed I am...it could very well be its last night sitting in my parking space.

kinda pissed can you tell?

Fuel filter
cap/rotor
spark plugs
spark plug wires
timing may have jumped
accelerator pump on the carb may be failing
plugged up carb try closing the choke butterfly and revving the shit out of this makes a high vacuum and cleans the carb repeat several times. Not sure you didn't state fuel injection or carb.
Plugged up cats
loose vacuum lines follow and check


Try a can of seafoam through carb and gas tank I usually go 1/2 and 1/2


Just a few things to look at.

cat converter clogged?