any 225 performance ideas

Agreed. The slant will let you down in the power made vs the money and time put in. The argument can be made tht is the most economical and toughest motor ever put on this earth, but performance is something that cannot be done with the word cheap next to it.

Buy a 360 w/tranny with 1/3 your budget, and then spend for a cam, intake/ carb and a tune, you'll be much happier in the long run