Heads Help!
Tom, I assume this is a street driven/pump gas car that you AutoX for some fun? Not knowing the total combo you have will hamper any suggestions, but as I see it, we can break this down to 3 individual mods and how the 1k would be best spent.....
1) Head flow
2) Compression
3) Camshaft selection
#1 & #2 can go hand in hand, but that may leave you lacking in the cam department? A set of KB pistons could get you a solid compression ratio, but the required machine work would certainly use up your budget?
From what I see at this point, I'd look into some mild port/bowl work and a good valve job with the existing heads.....maybe even a 2.02" intake valve along with that, plus a thin head gasket to get whatever compression increase you can? Along with that, I'd go right to a cam that will maximize your total combo. With some research, and with so many "shelf" cams available today, I'm sure you can find something superior to what you're running now. Also, there is always a custom grind from one of the good grinders that would fill any void if needed?
Like I said, that's my thoughts "for now" with only 1k to spend.....