OK! So I did some eyeballing with the pump and lower girdle. It looks like it is actually pretty straight forward, utilizing 2 existing bolt holes and the existing oil passage
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each of the respective colors seen matches it’s corresponding hole from the stock un-modifies pump to the lower girdle.
Red=oil passage
Blue=threaded bolt hole
Yellow=bolt hole with dowel pin
The biggest problem I can see are as follow:
1:Clearences
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As you can see, some material from the lower girdle and it’s mounting bolts protrude up into the space of the oil pump along, with the s2k one mounting flat stock and the k24a2 pump having pylons (?) that prop it up over this. It would appear that drag cartel has 2 pieces of metal that they bolt on that take up this space so that the pump fits.
2: Tensioner. The stock oil pump tensioner bolts to the housing on the k24a2 pump, and the s2k pump has no such holes. To remedy this, drag cartel has a machined a piece that covers the existing index pin hole and mounts through the body of the pump. This is the only piece that I can see having a mill would be helpful for. The front of the pump and some of the integral chain guide are milled flat so the other piece can be indexed between the mounting in the body of the pump and the pre-existing hole for mounting the pump to the engine itself.
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3:Missing mounting hole
The existing hole on the pump
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and the mounting hole in the lower girdle
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do NOT line up with one another as they are. To counteract this drag cartel has a plate that mounts through pump with a bolt through the misaligned bolt hole that does not protrude from the other side of the plate, and indexes on the oil passage dowel pin and proper aligned bolt hole.
View attachment 102725
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So yeah. Looks like the major problems actually have pretty straight forward. The actual mounting utilizes 3 points of reference from the stock part which makes properly aligning it to the engine immeasurably easier. Wasn’t expecting this to turn into a write up, but I guess it has! I’m gonna take some measurements next time I can get to the parts and start mocking up some pieces. The plate for the oil passage should be simple enough to make without a mill, the one that holds the chain guide may be a different story. I’ll document everything, and try to do this in such a way that someone who wants to do this themselves can hopefully do so without a machine shop, but we shall see. The measurements will be helpful regardless.