Thanks everyone. New here and started two threads without realizing sorry. All good information and lots to consider. I am leaning to not doing an engine swap even though I know a 350 would be a better option. The 305 in the car is fresh well about 25K on a rebuild (verified) the person I bought if from had done at a reputable machine shop. I called that shop and they will hook me up with the right 350 Vortec Heads in good shape for $300. I figure a cam $125 and the shop will sell me a performer intake they have for $75. My sons friends Dad is giving me a 615 CFM Predator he does not use. Headers $150 or so. My kid who is getting this car for his 16th birthday will definitely be surprised. He and I have spent allot of time getting the brakes, steering components all bushings etc. shocks up to par. He thinks its my car. I got until September to finish the engine mods. I think this will be enough power for a young-in anyway.