Auxillary fuel tank single cab 110

[Land Tiger]

Can anyone direct me to supplier of auxiliary fuel tank. I prefer not to fill from under drivers seat.
I have a home made tank that could fit up in the chassis below the tray but looking for other options such as drivers side sill tank.
It is a 85 Isuzu powered 110 tray top
Thanks

[Tombie]

LRA or Brown Davis (I prefer the former)

[PAT303]

Dolium make a slim line tank that sits against the headboard,a mate has one.He fitted a tap behind his seat and it gravity feeds to the original,really simple and easy way and you only loose 4'' of tray. Pat

[Land Tiger]

Didn't think to use the headboard, good one.
I will give LRA and Brown Davis a call during the week but could not see a tank for single cab on their website. I have a LRA on the 130 dual cab and it fits well under sill.