Got mine off eBay from the auction below.
https://www.ebay.co.uk/itm/192561695087
But they are made by Kamtec
https://www.kamtec.co.uk/p/quad-bike-body-shell-hpi-e-savage-revo-atv-lexan
The standard long posts for the savage mate. Need the long one at the back but the short will do for the front. It does sit a little higher than normal due to the lack of the bugle in the seat for the cooling head but not to much.
You do need to remove the rollbar from the truck aswell. The Quad...