I thought the taco nest's were sloped at the entry point? Nak, wouldn't you just build a tube platform to put your current tent on there? I've seen some cool one's that keep the top of the RTT at the same height as the top of the cab.
1978 13BT-40, 70 series mechanicals
1966 FJ45 lwb stock
2003 100 stock
1974V8J40, 1992FJ80, 1985FJ60, 1971FJ55, 1978FJ40, 1974FJ40, 1997 LX450 all long gone.