Mine is a Lance 480 but most of the older ones like Lance will..I slept 5 in my old Security 8ft TC years ago..Two adults and three kids and a dog..The two biggest went on the dinette table and the lightest went above the dinette table on the pull down bed/storage..
A simple 2X4 brace will temporarily raise the capacity of the above the dinette bunk(150# I think for most) for two kids if need be without issue...Been there done that with six kids total and four coming with us..When all came,it was tent time or truck seats for bed time...LOL
We did try 2 on the floor but when it was potti time,everyone woke up..LOL..It was all fun though