Mopar Intake difference P4876337 vs. P4876128

Mopar Intake difference P4876337 vs. P4876128?

Photos and description appear the same. Any difference?
The P4876128 RB single plane is priced really good < $250

http://www.moparonlineperformance.com/product-p/p4876128.htm

http://www.moparonlineperformance.com/product-p/p4876337.htm

The '128 intake is only for Stage VI heads, as it eliminates the need for intake spacers to use this intake on an RB block.

It doesn't work for any other combination of which I'm aware (and I owned the standard-port version at one time). Also, not a very good intake without significant work having been done.

Significant as in port matching, or something more?

I saw the other day that they were giving that 128 intake away. Sadly it is practically useless since only a few guys still have Stage VI heads on anything.

Yeah, I suppose "something more" would start to describe it. + + would be a good start.

Its pretty cut and dried.......

If you have MW size stage VI heads on your RB block, the 128 intake fits that combination of parts.
And nothing else.

The 337 intake is for MW sized ports with heads that don't have raised ports......like factory MW heads, or Edelbrock RPM heads that have been opened up to MW size.
It eliminates the need for a separate valley pan gasket, since it seals off the valley with a plate cast onto the bottom.
It can be used on some raised port heads as well(Indy, Victor, TF270, etc), but there will be a gap between the block end rails and the built in valley plate.

Thanks. Wondered why it was so cheap?

I just removed an Indy 2D and finally installed my newly ported 337 from Larry Smith on my Indy headed RB and what a difference! Whoa!

It’s like a few other tidbits from MP that was actually a good piece, for a reasonable price.

So.......naturally, you can’t get them anymore.