looks too me like you got a decent looking truck to start with and take it where ya want without worrying about origanality.
a 67 frame is easy to spot as the top of the frame rails around the engine are wider than any other year but its tough to know or see without seeing the two next to each other.
here in pa. as long as you got a title really nothing else matters as long as nothing causes attention to your mixture.
90% of these trucks are mutts 45-50 yrs later anyway and its still all gm.
good find on the girl,doggie and truck
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81 camaro 355 4/spd 342 posi my first love
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67 swb step 454/4spd ott 373 posi 4/7 drop.
2000 s10 zr2 little blue truck that never gets stuck.
'74 heald super bronc vt8. tecumseh powered moon rover.