Advice on PN for 440 valley pan gasket (bathtub)

[Stu Twin]

Looking to replace the ‘bathtub’ tin gasket on our 440. Having removed the one that was fitted, I feel we should refit a new one despite the one removed looking quite serviceable.
Trouble is the part number stamped on ours doesn’t show up on the Fel-pro website.
Number on ours is 90299. And has the heat crossover blocked off. When I search for Fel pro 440 gasket I keep getting 96000. But this looks to have the holes for the crossover.
Anyone know the correct spec and a UK supplier for one with no holes?
Photo shows ours. (not sure why it’s upside down?)
Thanks, Stuart.

[Stu Twin]

Don't worry, you can all stop looking now.

Found it. (with a little help)
If it helps anyone, the RB part with the heat crossovers blocked can be bought as a kit - Pn Fel-pro 1215. (comes with 4 separate fibre intake gaskets)
Whereas if you want one with the heat crossovers open, you can get the bathtub on it's own - Pn Fel-pro 96000.

[Stu Twin]

I received a new Intake Gasket (bathtub) Set, Fel Pro 1215.

https://www.summitracing.com/parts/fel-1215

I’m a little confused because it says it suits B And RB engines. Now if an intake manifold is not interchangeable between 383 & 440, how can the bathtub gasket work for both?
I would have thought the inlet ports would be further apart on an RB?
Just thought I’d ask before opening the box.
Thanks.

[RobTwin]

Answered in our workshop thread, thanks Martin