Eddy head question
Edelbrock heads chop off a lot of weight and the smaller chamber will help. Have a good shop go over the valve job, check the guide clearances, and do a little bowl blending and gasket matching, nothing radical. Also get the install height set on all the springs. If that is getting too pricey Indio Motor Machine sells the RHS heads fully prepped ready to bolt on and the Engine Quest heads are pretty good too both are closed chamber iron heads and cheaper then Edelbrock.
Are the cast iron heads on you car now ported?