I'm new here so be easy on a old man.

I have a 1939 Ford Tudor with a 402 big block. 700r4 Transmission.
I was tearing into the engine to cam and lifters. I was also going to change the valve springs. I pull the heads because the tops of the valves (tips) has some rough edges. Pull the heads a part needs Probably needs all valves and guides.

My dilemma is to repair these heads or to find a better set that would perform better ?

#6272292 oval port open chamber cylinder heads
#3999290 402 engine block

Edelbrock 0735 Carburetor
Edelbrock Performer manifold
cam spec. int. exh.
adv. dur. 268 280
dur@.050 224 230 lobe sep. 110.0
valve lift .515 .520

Comp Cam # cb xe268h

Any cylinder head advice would be appreciated !!!!