[JoeC]

The 198 number is from Vince E’s Yenko records. He first said 201 then changed it to 198.

In the MCR article it appears they had Vince E’s numbers and presented them to Don in the interview.
Vince’s numbers (54 1967s, 64 1968s, 99 Chevelles, 201 1969s) are the same as used in the article.

Don would not accept the 201 number but stood by his number of 500 69 Y Camaros but he seemed to accept the other numbers.

What is interesting is that Jim M (Chevy F&SO) also recalled the 500 number.
It is possible that the original deal with Chevy was for a min. of 500 427 COPO Camaros. The balance later sold to other dealers.

Super Stock only required 50 units but some other racing rules required 500.

I have read that one reason the Boss 429 was built was for Ford's need to qualify 500 examples of the new 429 engine for NASCAR.