Swivel Seat Base Question

[axel]

I have a 95 Ford van and want to mount swivel seats in the front. But I have non-Ford, leather, electric, heated, captains chairs and I actually want swivels that raise the seats a couple of inches or so. I am 6 foot but still feel as if I need to be a bit higher. Or if someone has a set of stock Ford seats in any sort of grey fabric?

[j.whitbread]

If your current non-Ford seats are mounted to the original Ford pedestals, wouldn't they fit the swivel with same specs?