A couple things I notice..... Your converter sets no where near the pump housing / mounting bolts. Mine will touch the mounting bolts because it is a larger dia. and I'm sure it's thicker from mounting tabs to the opposite side of the shell. Also, as mentioned in an earlier post,,,, it does appear as if your mounting flange holes are counter sunk more than mine...??? I'm guesing the starter nose is different between the Nippon Denso and the chrysler starter. When I worked at an autoparts store through college, I discovered that a Toyota starter was thesame mounting and correct dimensions to use on a Mopar.... Later on I seen these "Mini" starters for Mopar being sold,,,,, it was the same starter but cost more!
I just called in for lunch, but before this I was working on the car. I dressed the nose of the converter to better fit the crankshaft, and was about to touch up the flange countersinks a bit to get the bolt heads closer to being flush.
When I purchased my converter, I had a different build in mind and it kind of went a different direction! The stall rating on my Coan is supposed to be up to 4000 rpm so I kept in. I have always planned on buying a 9" to replace it, but when the trans let go my money went to the bellhousing instead. The converter as mentioned is a Coan 40215 Pro-Street version and is listed at 11" and up to 4000 rpm. I read in the JW advertisement that when using it to mate up a specific trans to a big block, that the converter had to be 11" or smaller so this shouldn't be an issue.
Ok, back out to the garage for some more checking....
