You're twenty and you already hit a tree and now you want more horsepower...
An unbalanced stroker kit is $1750+ for a 318=390....
A balanced 360=408 stroker kit is about $1750..
The reason is 360s are just done more often, so the kits more plentiful thus more cheap... A balance is about $250 so if you can get a 360 block to start with= free hp...
Machine shop work gaskets and we haven't even started on the heads yet...
My first question would be what's your budget??...