Mopar Performance P4532435 Block

I have a new early R series racing block. It’s new and still in the shipping crate. I purchased it years ago and can’t complete the project. I’m posting it here so hopefully, it will find a new home with someone that needs it. These are rare 4 bolt blocks. This one is untouched. I'm asking for $1800 OBO plus shipping. This one is hard to find and price. I think my price is low, But I'm willing to negotiate. My main goal is to find a buyer and get it in the hands of the right person. Treat me fairly and I will do the same. If you think the price is high or low, let me know. But, help me find a buyer for this part, please.

I have more information:
There are some additional castings, stampings, a paint pen, and a marker on the front.
R1 (cast into the block)
ST (silver paint)
#191 (black marker)
ST
G 167 (stamped into the block)
These markings can be seen in the second picture( middle) in the new group of 3 posted today a short time ago. Anyone that can decode this, please do!

I measured several things and have a handful more pictures to post. If you know how to tell the difference between 48 and 59 degrees, please share it. I can't really tell. The cylinders appear to measure 45 to 48 degrees offset from the pan rail. I don't have a tool to measure the spread between the cylinders, but I might go get something at Lowes.

Crank Journal is 2.665 in (raw)
Cam bore is 57.82 mm (raw)
Cylinder bore is 3.966 (raw)
Deck Height is 9.2 (raw)

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Guys,
It looks like all of you have been busy. This is what I've seen this morning. I didn't know any way to let everyone know, and I would defer to the website people if I'm wrong. I looked down the list of messages in my inbox to figure this out.

I'm sorry guys. I'm in a super stressful, super busy situation, because I'm injured and I have to move, plus I have a business and car projects.

So, I'm just getting back to this today. It looks like there are 4 people who said they would buy this part and I found these in my inbox to create this message. I have ranked them by the time the message came in and I will sell it to them in that order for asking price plus shipping. Again I'm trying to get it into the right hands and do not want to cause any bad feelings.

NOTE: Update!
FYI: cpearce was the first to show interest. He wanted to buy it if it met certain specifics regarding the final identification and should probably have first option.
0.5) cpearce showed interest with questions
1) richit "I'll buy it!"
2) phreakish "dropped out"
3) 68cuda416 "I'll buy it!"
4) rocket "I'll buy it!"
5) mstall showed interest with questions

I hope this is accurate and I don't know the best next step here. I don't know if I post my number or email address or what. I can PM each of the people in order with that info.
HELP!

Thanks,
Mark

One more thing. I'm going to go out and get more pictures and flip this thing over so I can give you all more information and settle a few looming questions. It is bolted down to the shipping caddy. Why don't you all wait for the updated info later today?

If I'm wrong on the "Sale" order or the person's interest, please let me know. I will reorder or drop names.

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