The manual states:
"**There are two different Driveshaft adapters, one for center sections from automatic cars which is coated clear zinc.
The Driveshaft adapter for center sections from manual cars is coated yellow zinc."
Strangely the Silver/Clear coated adapter plate fits, but the Gold/Yellow does not fit.
I guess it might be possible that one of the flanges was finished in the wrong color. But not both...
What am I missing?
I cant see any reason not to use the Silver Adapter.
I had the same problem. Ordered the IRS option from F5, they also supplied the driveshaft and gold adapter as well. Gold adapter didn't fit in the IRS flange. Called them and they sent the silver one, it fit....
Cheers, Steve
Gen 1 '33 Hot Rod #1104
347 with Holley Sniper & Hyperspark, TKO600, IRS, 245/40R18 & 315/30R18, DRL, Digital Guard Dog keyless Ignition