No its not legal.
Crossbar and rear braces must be welded to
main hoop. Sidebar must be included on driver’s side and must
pass the driver at a point midway between the shoulder and elbow.
Swing-out sidebar permitted. All roll bars must have in their
construction a cross bar for seat bracing and as the shoulder
harness attachment point; cross bar must be installed no more than
4 inches below, and not above, the driver’s shoulders or to side bar.
The only thing allowed to be jointed is a swing out sidebar.