My 2 cents eric , I would look for , 063 , 215 , 290 , early , closed chamber big oval heads. I have put together three 454's for my trucks with flat tops and these heads and this combo makes for a torque monster , (you have to put hardened seats in them).
I always went for the flat top small chamber , (quench) , set up over the dome , big chamber set up , (better burn , flame travel etc..)
If you can find these heads , do the hardened seats and get a good three angle valve job with flat top pistons at zero deck with a .041 head gasket , (or pistons .020 down with a steel shim gasket .020) , you will be at 9 to 9.25 to 1 compression and run a cam with a duration ,(218 to 225) range , you will have a torque monster on pump gas.
A few years ago we hooked up a travel trailer to my short bed to and headed to the redding drags , (160 miles or so away). Got there on test and tune day and there was quite a few trucks there so we said , (lets race our tow rig).
My truck , 77 short bed , k-10 , 454 , turbo 400 , 6 inch lift , 8 lug , 4.11 gears , 35 inch bfgs.
Motor , hyper flat top pistons , (0 deck) , 290 heads , (with mild porting) , rpm intake , 750 holley carb , 268h comp cam , etc....
Did a huge burnout for the crowd , in front of the burnout box , staged up and popped off a 14.6 in the quarter mile on 35 inch rubber.Raced my truck three more times all in the high 14's.
Great low budget combo for towing or having fun at the strip.
My crew cab has this same set up in it now with more head work and a 270h comp cam and it runs really hard as well. Hope this helps your search.
You must be registered for see images attach