I mocked up a 90 degree filter adapter on a stock k-frame using the Holley mounts and it worked beautifully. Don't remember the application but the part number is in the instructions for their mounts.
Note that this almost certainly only works with their mounts. They move the motor forward about 1.75" (per my eyeball measurements) which does several things for fitting the motor. The advantages are; 1. SRV valve and intercooler manifold clearance, 2. oil filter adapter fits and 3. stock low mount AC compressor fits (VVT only!). But it also means the trans mount, etc. has to be re-engineered. The trans location isn't an issue if you plan to do a T56 swap (or similar) at the same time but sucks if you want to use your existing TKO swap stuff or stock A833.
Holley does have mounts for trans like the TKX and such. So if someone were to do a full boogie swap, might we worth looking into those.