buy new pistons....KB 243 ...raises the compression and a lot lighter.....have your heads update new 2.02 valves...get the bowls work on...
update the camshaft to something like a XE268 from compcams......and while you are at it...add eddy performer rpm intake or air gap intake...update the advance curve in the distributor...
I am sure many more will respond with their suggestions...LOL
