Holley Engine to transmission lower structure support vs. stock 4.7 support?

MonkeyMadness said
Well I imagine Holley was trying to sell to a larger group of customers and add the additional 4 lower holes to fit various other transmission.
As for the 45-545RFE transmission that I'm using both parts are a fit. My only worry as mentioned above is the oil pan rail pattern.

Yep.

Fits all common transmissions: TR-6060, NAG1, 545RFE, 8HP70, 8HP90, 9HP75, A727, 46RE, 46RH + More

MonkeyMadness said
Anyway I found a used one on flee-bay for 20 bucks so I'll bite the bullet and test it out...

I think the only way to know is to try and bolt it up, and $20 isn't a huge risk.

Sorry I can't remember where I saw something similar discussed so I could try and actually be helpful.