One wire lock-up, 4 spd automatic w overdrive into A-body.

Get the measurement from bell to end of tail shaft and I will see if you saved any length compared to the wilcap.

OK, thanks!.
I used a straight edge on the output shaft and hooked my tape measure to the face of the bellhousing . I measured 29 1/16" from the bellhousing face to the end of the output shaft.

When I measured from the bellhousing face to the end of the aluminum tail section where the seal goes, I got 28 3/8".

I found this on the web. It's hard to see, but the stock length appears to be 28 1/4" from bellhousing face to the end of the cast tailshaft. The upper measurement in the photo relates to the centerline of the rear mounting bolt holes, which is shown as 27 15/16".

I'm assuming is 1/8 of an inch longer than a stock 200R4, but my measuring could be off too.

I'm going to go out in a bit and drop the torque converter into it, so I can see if the mounting tabs for the flex plate are going to end up in the right location. I've already had to ship it back once because it didn't clear the added depth of the tone ring style flex plate I run for the EFI.