Thanks for the info and research offer there zzrken.
Since posting this question I discovered it is a 5.0, funny thing is it has "5.0L" cast right beside the cast #. I do believe this is the original engine as the date codes for heads and block are within a month of build date!
Anyway as of today it has an '88 305 with the '89 TPI and sensors. What a bear removing and replacing these "newer" engines
DanC
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I'd rather be Historically Accurate than Politically Correct !