300 HP out of a 318, is it possible with bolt ons?

Back in the day, we all considered bolt ons to be a 2 barrel to a 4 barrel swap, better air cleaner assembly, headers and true dual exhaust, electronic ignition conversion and a curve kit along with better rotor, cap, wires and plugs. We also would relocate the coil to help keep it cool. Also cool cans were sometimes used. Some guys would even take the carburetor apart and deburr the inside and remove the choke horn. We was all kids Back then working were ever and so we had to get our cars to run as good as we could with what we had. One guy even put a torque converter from a powerglide in his turbo 350 as that was a poor man's stall converter. We had loads of fun and never had a fortune in our cars. What was cool too is that everyone helped everyone it didn't matter what brand of car you had.