small block fresh up

Hey guy's, I have a 67 barracuda that has a 2 bbl. 273. I am going to pull the motor so the engine bay can be painted and while it is out I am going to have it freshened up. It has about 14,000 miles on a .030 over rebuild about 26 years ago. I was thinking about maybe installing some 273 Commando hi-comp 10:1 pistons and maybe putting on some 302 or similar heads or I was just going to stick with stock 2 bbl. pistons and maybe have a little work done to the stock heads (mill,valves,etc.)and in both situations go with just a little bit bigger cam. I am not trying to build a race car but maybe gain about 25 or 35 HP. I allready have a 4 bbl. and hi-po elec. ign. and headers and duals, etc. on the little 273 now and it doesn't run too bad. I guess I am just wondering if the hi-comp. pistons and different heads would be worth maybe the extra 500.00 or so to freshen up. What do you think? I do want to keep the 273 in it #'s, everybody first suggest ditching it but I would like to keep it as original as possible, I know it's weird. THANKS:blah5: