Originally Posted by Twins
15mm i think , i have been going down the scrappy when i need some and getting it from rear bumpers

You just reminded me theirs a cab in the scrapper with bumpers on I'll check it out in the morning.
*Edit* Managed to find bumper inserts in a cab
Typical, their was a 90 spec front bumper but missing the bottom corner

so still on the search for a complete 90 spec front bumper