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1990 Ford F-250 Questions

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I have a 1978 Ford F250 351M. I need to know if I have all the right parts on the engine for passing smog.
Will my 1981 F100 Custom front Fenders,Hood, Grill,head lights all fit onto the 1988 F250 Custom? By looking at it all bolts look like they would line up but can't find any question like this online. Also the cab rear window, is that interchangeable with the F100s window? Going to replace doors on 250 from the 100 but I know those are going to switch over easy. (Both are 2WD)
1990 7.5L randomly shuts off while driving. If I let it set for a few minutes, it will fire right up and drive home. Usually, if I try to restart it right away, it just turns over and doesn't start, or briefly starts and immediately shuts off. I've replaced distributor cap, MAP sensor, fuel filter, and rotary button. Just ordered the infamous ignition control module to try it. Any other suggestions?
replaced EGR vale,tube and sensor,idle air control,throttle position sensor,vaccum solenoid,fuel pressure regulator,full tune up. will run when feathering the throttle, out of ideas
Ive put all tune up parts,then fuel filter,now vaccuum lines. Truck refuses to stay running
engine runs just fine, until I put a load on. Then it starts bucking n missing until about 2000 rpm
When I press on the brake peddle the brakes grab and the-y wont return up without putting my foot under the peddle
At idal or giving gas rpm will surge
The rear fuel tank is leaking from the top front of the tank and the rear tank does not work when you switch to it. This problem happens all the time
in a const. zone stuck behind a semi made it up hill died soon after will crank but wont start checked all fluid levels towed home still wont start
oil gauge fluxuate from high o low when driving
How much fluid should i put in.
replaced master cylinder and thats when brakes started not releasing. bled brakes twice. Back drums are solid and wont move at all to come off but will turn.
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