10's on $5,000 ?
I seriously doubt a stroker kit is going to fit within the budget.
In my mind, I see reality(if a $5k budget is a real thing) being more like trying to find a motor home 440 shortblock, complete, that doesn’t need an actual “rebuild”, for under $500...... and re-ringing it.
The possible hurdle being...... 440 blocks may go for pretty good $$$ in your area.