Looking for a little more power out of a 318

Everything is stock in and on the motor besides the cam. I think I'm gonna leave the motor as is for the rest of the summer. Will try to finish up some trim hunting and body work for now. Save up some money for paint and some new wheels and tires.

I'll probably start looking for a 340/360/383 crate or block soon, opinions or advice anyone? Would also like to change out the trans.