I agree the blue one still is too low, it wasn't actualy precizely drawed to dimension. I'm 1.86 by the way.
The way to get in bed on that drawing, was to lift the middle 1/3 of the bed up, then climb on top of the roof 1/3, then lower the middle 1/3 and having the full 3/3 to use.
I'm still trying to figure out how much the construction may lean over the back, I could hang some spare taillights onto the new construction and put the license plate on a new spot, not sure if that's legal though.
Where can I find some detailed pictures of a slide-in system please ?

A 38.0in. 0.97m. - Seat cusion to roof *
C 18.0in. 0.46m. - Seat cushion depth *
E 19.0in. 0.48m. - Seat squab height *
G 13.5in. 0.34m. - Height of seat cushion *
J 16.5in. 0.42m. - Steering wheel to squab (max.) *
J 12.5in. 0.32m. - Steering wheel to squab (min.) *
K 6.5in. 0.17m. - Steering wheel to cushion *
L 43.5in. 1.10m. - Leg room (max.) *
L 41.0in. 1.04m. - Leg room (min.) *
Q1 20.0in. 0.51m. - Width of single seat *
Q2 43.5in. 1.10m. - Overall width of seats *
S 45.5in. 1.16m. - Max. seat width at cushion level *
U 46.0in. 1.17m. - Width of seats at shoulder height *
W 84.2in. 2.14m. - Wheelbase
X 53.5in. 1.36m. - Overall height
Y 55.5in. 1.41m. - Overall width
Z 130.2in. 3.31m. - Overall length
AA 32.0in. 0.81m. - Door entry width
AC 37.0in. 0.94m. - Height - body floor to roof
AD 43.75in. 1.37m. - Body interior width
AE 17.25in. 0.44m. - Body interior height
AF 39.2in. 1.00m. - Tailboard opening width
L 43.5in. 1.10m. - Leg room (max.)
AH 17.5in. 0.44m. - Height of body floor
AJ 54.75in. 1.39m. - Body interior length at floor
* Approximate measurement