That's a Jack's Rebel Warehouse conversion. He's converted 250 and 450 models alike.
www.rebelcatalog.com
www.rebelcatalog.com
Riggan still does 250 conversions, we spoke on the matter in more recent years. While 450 conversions are also feasible, he simply hasn't done any due to the scarcity of 450 parts.I know Jack Bauman did Rebel conversions as Rebel Warehouse owner, don't know which if any conversions Jack Riggan has done since buying Jack's Rebel Warehouse 10 or so years back..