Mystery Vintage undertrays?

[minichamps11]

Anyone identify these mystery buggy undertrays? First one looks like it's for a Schumacher CAT but the other I have no idea....

Any ideas? PB?

http://i265.photobucket.com/albums/ii225/minichamps11/P2130569-1.jpg

http://i265.photobucket.com/albums/ii225/minichamps11/P2130571.jpg

[Ted Maul]

Bottom one looks like the one I had for a PB Mini Mustang or my mates PB Maxima? Maybe if you can find image of GRP chassis for those cars and compare/contrast