What tire lift combination is this truck?

[Pano]

I sent a PM to TFANTIN (owner) but he has not been on for 2 yrs. I like the look of this truck and want to make my 87 GMC V2500 4x4 look similar. TFANTIN posted that the wheels are Kelsey Hayes 9.75x16.5 and the tires are 12-16.5.

Do you think the tires in the pics are 33x12.5x16.5 and what do you think the lift height is? I don't know what suspension the fire rigs came with.

My truck shown from 2002 is with fresh paint (2 tone) has 235/85/16's on it. The Ford hubcaps are gone and I have dog dishes on now. I can find 16x8 steel wheels from summit and use 285/75/16's which are about 33's and 11 inch wide. Do I need a 2-3 inch lift?

What do you guys think? Thanks.