I just relived the MAC nightmare with their windage tray on my 5.0 engine. Engine is on the stand and I suggest that anyone wanting to buy/install a MAC tray-install it while the engine is on the engine stand because doing it in the car would be a royal pain. It fits. But not without massaging. First off, the tray hits the pump so I had to clearance a little around the oil pump. Then just as I got it to fit, I attempted to bolt the pickup on. No luck. I actually had to beat the ever living crap out of the tray for the pickup tube to clear it. In doing that, all sorts of things happen. one, the scraper gains clearance and you'll have to readjust. Then I found that I had to remove some material around where the pickup goes onto the thrust main bolt. All said and done, I could do another one in about 4-5 hours.
Oh..almost forgot...I also had to beat the pan out in a few places as it hits the tray. Nothing too major (I hope) but it's got to be done for clearance or the pan hits.
After beating on things a little I double checked pan to pickup clearance and I had 1/4" with no gasket and 7/16" with the gasket. Actually it was .412" on one side of the pickup and .427" on the other-but close enough.
If I didn't already have the tray, I'd have gotten something else. I highly suggest spending a little extra for one that actually FITS.
Judging by the comments about MAC products, it appears that they're on par with GER torque converters & transmissions. Garbage on both accounts.