We have the spacer kits in stock if anybody is in need of one.
http://www.accurateltd.com/A-Body-Spacer-Plate-Kit_p_341.html
P.S. A spacer kit can also be used on the left side for a 440 application if a 383 (002 ,729 casting) manifold is used. This might flip somebody out that is "anal" but guess what? We sell a lot of these kits for that reason and we are in business to supply what people want. And if you don't like the included bolts-use something else.
Side note: 67-68 big block a-body cars used a two piece head pipe that was welded together. These were 2.25" halfway back then 2" to the mufflers.
One piece head pipes are available with the ugly dents for 1969 as an option but you will need to specify this when ordering.

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