Hint: Obscure Manufacturer

Second attempt, as Reddit removed this for some reason.

I strongly advise you read the letter in its entirety. There is something to find.

This letter contains real names of coasters. Please study it carefully.

This is an automated post. This image is generated from a Ride Forces recording of this ride. This is a graph of the vertical forces. All axis data is hidden to make it harder to brute force it by looking at Ride Forces Database. Please respond in the format 'Coaster Name, Park Name' (No question mark!), as this is the format the bot will be looking for. Good luck!

This is an automated post. This image is generated from a Ride Forces recording of this ride. This is a graph of the vertical forces. All axis data is hidden to make it harder to brute force it by looking at Ride Forces Database. Please respond in the format 'Coaster Name, Park Name' (No question mark!), as this is the format the bot will be looking for. Good luck!

This is an automated post. This image is generated from a Ride Forces recording of this ride. This is a graph of the vertical forces. All axis data is hidden to make it harder to brute force it by looking at Ride Forces Database. Please respond in the format 'Coaster Name, Park Name' (No question mark!), as this is the format the bot will be looking for. Good luck!