Found: 92 Dakota Manifolds

I bought a set from Hemi ED which were in excellent condition. However I have decided to wait until I can find the two which are the 2 1/8 inside diameter. The casting numbers are 53010186 and 530010187 for the 1 7/8 and 5306619 and 53006618 for the 2 1/8 inside diameter at the outlet. I have been unable to find the 2 1/8 ones new and am not surprised that I can't find them as they were supposedly produced one year only(1992). When I look up an application for a 92 the superseded 1 7/8 manifolds are listed as a direct replacement for the 92 2 1/8 ones. In a dyno test in another thread that was started about dakota manifolds a few weeks back, the author of the article said that the inside diameter of the manifolds he was testing was 2 inches. I have been unable to locate any info on 2 inch outlet Dakota manifolds and I suspect he was calling the 1 7/8 a 2 incher.. If you interpolate the graph the "2" inch manifolds outflowed or equalled all 340 manifolds with the exception of 1 and that was only an few horsepower difference. So... if the test was on a 1 7/8 manifold that he was calling a "2" and it equalled or outflowed 340 manifolds, then it stands to reason that the 2 1/8 manifolds outflow ALL 340 manifolds. I will still fall short 15-20 horsepower compared to even a cheap set of headers but will not have all the headaches that come with a set of headers. I say 15-20 horsepower as I have seen 4 separate dyno tests on manifolds vs headers and the range was 18-25 horsepower difference. Also the horsepower rating in 93 on Magnum motors dropped 10 horsepower from 92 which was because they went from a 2 1/8 outlet to a 1 7/8 outlet. I still plan to extensively document the installation of the 2 1/8's but it will probably be a while until I can locate a set in good condition for a good price. I want to sell the set ED sold me ( 1 7/8 ID)and I will ship them anywhere in the lower 48 for $90(price includes shipping)> I will post the ad in mechanical parts for sale.