502 vs 572
 

Rebuild the 502 to be durable or use a 572 stroker kit?

Depends on your needs. Do you want to wrench or cruise with little worries

an 572 is often an very reliable engine and will perform very well

I would stick with a 4.25" crank in a std deck block. 540, 555, 565ci depending on what your block can be bored to. The 572 really works better in a tall deck block

What drive are you using?