Got around to fitting mine up yesterday.  Windage tray took some cutting to make it work and the pickup tube took some bending but not much.  I just threaded it in until it was bottomed out and was able to pull up and back on it to move it a tiny bit at a time. Checked fit with pan against the rails until it was lined up just right. Easy! 
Windage tray I had to remove some metal from the middle and rear louver in the bottom as it was hitting the baffle in the 440 Source heavy duty pan.  No big deal and easy enough to make work, but annoying that they say it'll fit right.  Oh well, all better now. 
This is just how hot rod building goes and it's worth it in the end! 
