i don't think any of the FR divisions, except Dynamax, would do any customization.
some of the more expensive brands that aren't under a big corporation, like New Horizons, would probably do it for the right price.
but companies like FR do mass manufacturing with the idea of lowest cost to build.
for them, there's not enough money in customization.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC