i ran a 4-row on my g's, the combine handled them great, always wanted to put a 6-row on, but couldn't find any in my area that were in good condition, so i went with a different model for my 30" heads, a cheap bin extention for your g combine is to take the wire mesh tank extention off another g combine, turn it upside down and it will bold directly onto your exsisting mesh screen, no holes need to be drilled, no duct tape needed anywhere either!!, also my g's are for sale, with all heads if anyone wants to make me any offers..thanks!!