Ok, so this project is not anywhere close to getting started, maybe by this time next year... but what's the best way to get 35s on my Yukon? Option #1: Get Fabtech's 6" IFS Lift kit for about $1500.00. It modifies my Short Long A arms in the front and puts a 4" block and add-a-leaf in the rear... I'd still have a 10 bolt rear, and weak ass axle shafts in the front, but I'd definitely be able to squeeze the 35s under the fenders with no problems.... maybe even 38s with some trimming and fender flares. Total cost, about $1500 plus new tires and wheels, so $2500. Option #2: Pay $1000+ for a Solid Axle Swap kit (including necessary extras) and use my 10 bolt front end from my 86 K5, swapping in 3.42 gears for the 3.08 that's in it now.... I'll save money on the axle, and eventually need to buy a new one, but it is the most cost effective (read: cheap) option. Total cost with fab, about $1200-1500 plus tires and wheels, so $2500. Option #3: Pay $1000+ for a Solid Axle Swap kit (including necessary extras.) Add in the cost of a used D60 front and used 14BFF rear, buy new 3.73 or 4.11 gears, depending on the use of 35s or 38s (I still want the whole 1800RPM Highway cruising, hence the tall gearing) and do it proper like. Then there's the extra cash to refinish the rear springs from the 86 to lift the front end 4", and the ~$800 to buy new 56" springs for the rear. Add in fab work, and I'm looking at about $3000 to put a Solid 1-ton running gear on this truck, which is more than half of what I paid for it... plus the cost of tires and wheels, so $4000-4500. Option #4: Ruin the resale value of the truck entirely by doing some major fender trimming/rebuilding so I can fit 35s without a lift. Only benefits to this idea are that it's cheap, and it keeps my center of gravity low, while still raising the ground clearance by 2 inches over stock. I'd rather stay away from this idea, unless someone can show me pics of a truck that's been done like this and still looks good. In doing this project, I'd like to keep my average mileage as close to 18-20MPG highway as I possibly can. I'd like to be able to cruise at 1800RPM at 65MPH (currently 1800RPM at 55MPH) and I'd like to keep as much of the original stability of the truck as possible.... meaning if I don't have to lift it, I'd rather keep it low and stable than high and wobbly.