Need an engine help
 

Hi anyone reading this, I posted this on another forum in the site but don't know if that was the right place, so here it is again,

i have a 90 honda civic lx 1.5l automatic and I need a good motor for it. If anyone knows a good reputable website I can buy a motor at or if anyone has a good one for sale please let me know.

also the problem with my car is someone did a bad headgasket job on it. My car went from leaking oil before the mech touched it to burning oil and antifreeze, smoking, and now it stalls out after it warms up everytime even if driving.

Could it be the head gasket making it stall? Or is it something else? I'm wondering will installing a new engine get the car running well again or will it continue to stall out. Thanks for any advice.