What type of dart do I have?

4spdragtop said

I've seen a few decoders stating 2bl??
I know "E" was the 4bl? In 67 anyway.

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Let me correct myself. I was typing on my phone, watching the end of a movie and talking to my wife all at once. LP23D6
The D is a 273. You need a fender tag or build sheet to figure out 2 or 4 barrel.