How could i make my engine better?

[KillaCamaro67]

well ive been concidering doing some tidying up of my engine and its problems here and there... but i was wondering.. how could i bring my engine up to its best?

heres my lump so far..

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a 406 cubic inch SB chevrolet. This engine is 6.6
The engine block was fully reconditioned (bored .030" over in
the process),
increasing displacement to 406 cubic inches.
Edelbrock Performer RPM aluminum heads (64cc straight plug
chambers)
Edelbrock Performer RPM aluminum intake manifold
Lunati cast crank and pistons assembled for 10:00-1 compression
Lunati "number 10" 292/
292, Lift
.480/ .480
Holley 750 vacuum advance carburetor
GM HEI distributor
The transmission is a TH350 3 speed automatic.

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i know a couple of parts on here are older production like the cam, but what could i do to improve what i already have?

or atleast dress it up while i got it out? ...and i know it need a good cleaning too

thanks yall!!