100 series lumber support

I would have thought that a bit of lumber in the seat might be a bit uncomfortable. You probably need to 'log on' sort out the wiring...

LUMBAR Support LUMBAR Support I must write it down a100 times so that I don't make that mistake again....lol

cobber I owned a 1999 100 series GXL which I loved everything about except for the seat. Now I have a 2004 100 series Sahara with electric adjustments, my perfect vehicle except for the seat. Don't waste your money with a conversion. I use a lumbAr cushion I bought from a chiropractic supply shop. And no I don't normally have back problems. For work I drive a 2016 Kia Rio which I find more comfortable. I have toyed with the idea of getting an ARB everything seat but they are about $2k.
cheers
David

Cobber

I think there is an option of fitting a seat from a XR6 or 8 Falcon .
I have a HDJ79R and I have been thinking of updating my seats as well .
You would be surprised how many seats from different car makers with little effort may fit .l
My previous Troopy had front seats from a Kia Carnival people mover and they were really supportive .

Cheers

Cobber
If you want a reatively cheap fix to the problem you can do this.

Have a large heavier quality plastic bag which can be gathered at the top and sealed fairly quickly.
Use some expanding spray foam as in expanding gap type stuff, used in fridge repair of insulation. Selleys product.
Spray foam into lower end of bag and quickly seal it.
Place bag on seat behind where you require the support.
Sit against it where you are comfortable as in driving.
Foam will set to be a support for your shape, excess will ooze out the sides into the unused volume of the bag.
Trim off excess bag and set foam.
Best to have a plastic cover over all when doing so. That stuff doesn't come off.
After removal of excess foam you will have a profile of your rear, and if that shape/profile is cut from seat foam (Slightly thicker will ensure the lumbar support too) and placed under the seat cover in that position, it will support where the Yota seat didn't.

Much cheaper than $2K.

Long range tank makers use a foam and plastic bags to expand into the various gaps of vehicles and then trim to obtain design of tank shapes. Then recreated in steel.

Huracan Fabrications in Vic. do conversion kits for XR6 Falcon seats for 70,80 series Cruisers speak to them about the 100 series.
I converted my 2000 model Troopy 6 months ago, best thing ever. Conversion kit costs about $180 then you buy a set of XR 6 seats. Mine cost $350 the pair.
Couldn't get the photo to the post. Hope you can open it