[Too Many Projects]

After studying this for some time, I can't determine if it is, actually, an L48 car. The pic of the black stamp is interesting in that it does NOT include the entire application code, only the M, which can be either an L30 or L48. There is so much paint on the pad that I'm not qualified to determine broach marks.

This statement in the description, also raises a red flag. "Being curios I pulled heads and sure enough it had the original GM pistons and never rebuilt factory bore as well made sure it was a small journal motor."
Everything I've ever read about the introduction of the 350 engine is the block and cranks were now large journal main bearing with the 327 following soon after to be uniform. Maybe he measured the rod journals ?
I can't see the firewall well enough to determine if there is a speedo cable entering under the column.
Left fender doesn't seem to have the 350 emblem. I didn't enlarge it and there does appear to be rust above the flags, possibly from the missing 350 emblem holes. The right fender has '68 emblems, possibly complete fender with the marker hole filled in.
Trim tag...by the body schedule code, this car was built 4 days after mine. Interestingly, the first 2 digits of the body number are missing ? Is this a known anomaly of LOS stampings, or a deliberate omission to hide the cars true identity ? I couldn't find any record of the vin in the ad either, which could possibly narrow the car down to known SS cars... far too many questions to know for certain this is an actual L48 vehicle for me.
Anyone interested in the vehicle, please do your own homework, your mileage may vary with better knowledge and experience.