OK, how about Sunday, June 4?

1) XPLORx4
2) Huey
3) XSAL
4) Piett
5) Matt
6)
_________________________
4x4 in uppercase is $X$!!!
1997 R50: VG33E/RE4R01A/TX10/3.7/R200A/ARB/4.636/H233B/ARB/4.636/321150R15