Question on seat foam

[twas_brillig]

AH Spares charges 27.50 pounds for one seat foam (I'm not complaining, just context). I'm toying with the idea of going with steel racing seats so as to get the head/spinal protection and a 4 point seat belt compatible seat. Can anyone advise as to the quality/specification/source to purchase foam suitable for 2 or 3 inches of seat 'bottom', as these seats will need complete upholstery/foam to make them civilized (i.e. comfortable) enough for my tender posterior. Thanks!

 

[Rut]

I used AH Spares for their foam and seat covers and a CA company on eBay for a new seat bottom. Everything was good quality and I'm very pleased with the results, but it's still a 1960 Bugeye with a solid spear for a steering column and a weight closer to a large motorcycle than a modern car. High back seats with a headrest can help in a rear ender, think Miata seats, but that really changes the appearance of the car. I think just about everything we try to do to make these cars safer really makes us think they are safer, but the reality is...
That said, I'm installing 3 pt retractable belts and driving like it is a motorcycle...not afraid, but very aware.
Rut

 

[Bayless]

driving like it is a motorcycle...not afraid, but very aware.
Rut

I like that. Says a lot.

 

[twas_brillig]

Fully concur (and I just did a bit over a thousand miles yesterday on my Buell, to qualify for the 'Iron Butt' award: 1000 miles in less than 24 hours. And dang near hit a deer need the end of the ride, about 3:00 am. Stopped and looked at the milky way though (twice); stopped (twice) to watch northern lights as well. Had a fellow stop behind me when he saw me pull off (northern lights) about 1:00 am: recognized that it was a motorcycle and wanted to make sure everything was fine. He was heading in to Calgary to fly up to Fort Mac and the oil sands for work.
The LED tail & brake lights are pretty much essential to keep your rear end in good shape.
I want to add a roll bar - not for rolling the car, but for protection about being t-boned and/or rolled over in an intersection. Also to provide a mount for 3 point belts - laps only at the moment.
But back to the original question: any wisdom as to foam density, specifications, thickness etc. for making a comfortable seat? Norman Nock recommended getting a hole saw and removing some of the foam from the stock Big Healey seats. Thanks