jfigster,
Here is my take on this,You want more power but don't want to spend alot of $$.Here is another option for you,Get a 358 cc cub set up.Stock crank stock size domes and way more power then spending all that money on a 4 mil crank and geting the stock cylinders set up for it.You all ready have the pipes and the stock carbs will work with the 358 cub set up.